Digital Cameras

Does the external flash automatically adjust its zoom position for the 1.7x focal length multiplier?

No, Sigma flashes are designed to provide an angle of coverage that accommodates the picture area of a standard 35mm film camera. The area covered by the flash will, therefore, be larger than the recorded image due to the 1.7X focal length multiplier of the camera.

How fast is the continuous shooting? How many images is can be capture in continuous shooting?

The SD14 features a continuous shooting speed of 3 frames per second. The number of images that can be captured in continuous shooting mode is dependent upon the resolution setting; High - 6 frames, Medium - 12 frames and Low - 24 frames.

Is it still possible to get dust on the sensor even with the dust protector?

Occasionally small particles from the shutter mechanism will flake off and adhere to the image sensor. If these particles are big enough to be visible in your images, it will be necessary to have the image sensor cleaned.

What do I do if the sensor gets dust on it? Can I clean the image sensor myself?

Although it is possible to remove the dust protector and clean the image sensor yourself (see the camera manual for instructions), we do not advise that you attempt this procedure yourself. Due to the extremely delicate nature of the image sensor, we strongly recommend that you contact an authorized Sigma Service Station to have the sensor cleaned.

What does formatting a CF card do?

Formatting a CF card erases all of the data on a CF card, including files, images and directory structures. Formatting a CF card may also repair a non-functioning card with corrupted data. Physical damage, faults or bad sectors cannot be fixed by formatting.

What happens if I put in a CF card with X3F images already on it?

Regardless of the File Numbering setting, the next image captured will be assigned the larger of 1) the next available number from the camera image counter or 2) one number greater than the highest numbered image already on the card. This system prevents images from showing up on the card chronologically out of sequence.

What if I shot my pictures with the wrong white balance setting?

As long as the image is taken in RAW, the white balance setting does not in any way effect how the image is actually captured, but rather just appends certain information to the image file telling the computer how to process the image. If the image was captured with the wrong white balance setting, it is easy to change this once the image is on the computer using SIGMA Photo Pro.

What is a histogram and how do you use it?

A histogram is a graph depicting the distribution of brightness values in the image. The horizontal axis shows the brightness level (from 0 to 255), with darker pixels towards the left side and brighter pixels toward the right. The vertical axis shows the proportion of pixels at each level of brightness. By examining the histogram you can gauge the over-all exposure of an image. When the histogram is higher on the left side, the image is mostly composed of dark pixels, causing it to appear dark-either because the image is underexposed or because it is a dark scene such as night shot or sunset. When the histogram runs off the right side, the image will have many white pixels-either because the image is overexposed or because it is a bright scene such as the beach or snow. A histogram with a fairly even distribution of pixel values usually indicates that the image is well exposed, with good contrast. However, the histogram distribution of a well-exposed image will vary greatly depending on the subject.

What is custom white balance and how does it work?

If you are photographing under very unusual light conditions such as mixed light sources, or very specific studio lighting, such as strobes, for best results, it is recommended that you use the Custom white balance setting. This feature allows you to capture a sample of a known neutral colour object (such as a grey card or a white wall) and use that information to adjust the white balance of the following photographs.

What is the dust protector?

The dust protector is optical glass shield unit which is equipped SD series Digital SLR camera. It prevents dust or dirt from entering the camera. In addition, the dust protection can be detached easily for cleaning image sensor.

What is the mirror lock-up mechanism?

The mirror lock-up mechanism raises the mirror thus preventing vibration when the shutter is released. This prevents camera shake, and is especially effective for macro photography or landscape using extremely long telephoto lenses. Use of remote controller (sold separately) or cable release (sold separately) also reduces the possibility of camera shake.

What is the new "Fill Light" feature of SIGMA Photo Pro?

The Fill Light affects tone correction by adding extra light energy into the shadow regions without overexposing highlight regions. Decreasing this setting can be used to increase shadows in darkness.

What is the Quick Set Button?

The Quick Set button enables users to display important settings, ISO, pixels, JPEG quality and file type, white balance, on the LCD monitor, using one button.

What is the shutter life cycle of the SD14?

The durable focal plane shutter mechanism has life cycle of over 100,000 shots. The shutter is ideally suited to the requirements of digital cameras. This new shutter dramatically reduces the amount of dust and dirt from the shutter mechanism.

What is the synchro mode on the SD cameras?

The Synchro mode enables to shoot fixed shutter speed 1/180 sec. setting with Auto bracketing function allows selection desired aperture value and easily flash exposure bracketing.

What kind of image processing is performed on the camera?

The camera performs a limited amount of processing, in order to display and store a small preview of each image. When the user magnifies an image to examine it in more detail, the camera further processes the target area to give a higher resolution view. With a goal of saving time and power, these previews and magnified views do not use the full high quality processing that is available in Sigma Photo Pro.

What lenses can I use with the SD cameras?

The entire range of Sigma lenses is compatible with the SD cameras, including DC and DG lenses. Just ensure you purchase the Sigma SA fit as the other fittings are not compatible.

Which kind of mount type is available with the SD cameras?

SIGMA SD cameras are available with SA bayonet mount (non-external mount type).

Which languages are available in SD cameras?

SD14 camera is available in 8 languages from English, Japanese, German, Chinese, French, Spanish, Italian and Korean.

Why doesn't the number of images remaining shown in the frame counter match the actual number of images I'm able to take?

The number of remaining images shown in the frame counter is only an estimate based on a fixed file size. However, all images are compressed in the camera. The RAW files use a lossless compression algorithm (meaning that the compression does not, in any way, degrade image quality). Therefore, the actual size (in megabytes) of each image will vary depending on the subject, shooting conditions and shooting mode, which can all affect how well an image compresses.

Why won’t my photo editing software open my X3F files?

You need to go to the Sigma Photo Pro conversion software and save your RAW X3F files as uncompressed Tiff files and then your software will open them.

Will my pictures be sharper if I shoot without the dust protector?

The dust protector does not degrade the image quality in any way, nor does reduce the cameras sensitivity. The camera will not function properly if the dust protector is removed.

Lens Questions

Are Sigma lenses compatible with my new camera?

Please refer to our compatability chart: http://www.sigmaphoto.com/sigma-lens-chart. Please contact Sigma Corporation of America at 1-800-896-6858 or via email info@sigmaphoto.com.

Can I calibrate my lens to work with my camera?

In 2013 Sigma introduced our Global Vision lens line along with the USB dock, an accessory sold separately allowing you to calibrate the AF Data of any Global Vision lens. By connecting the USB cable to a computer, SIGMA USB DOCK enables photographers to update the lens firmware and adjust parameters such as focus. The adjustment is processed with special software (SIGMA Optimization Pro). The AF speed, focus limiter and OS function are also customizable for Sports lenses. To find out more information, consult the USB dock page.

Does Sigma make lenses for manual focus cameras?

Sigma no longer manufactures lenses for most manual focus camera. However, in some cases (e.g. Nikon and Pentax) AF type lenses can be used for manual focus on the manual focus cameras.

Does Sigma offer any teleconverters?

Sigma offers both a 1.4X and a 2.0X autofocus APO teleconverter. These are dedicated teleconverters, designed for use with certain compatible lenses.

I’ve recently seen a reference to FLD glass being used in Sigma lenses, is this different from ELD and SLD glass?

FLD ("F" Low Dispersion) glass is the highest level low dispersion glass available with extremely high light transmission. This glass has a performance equal to flourite glass which has a low refractive index and low dispersion compared to current optical glass. FLD glass offers superior optical performance, equal to flourite, at an affordable price. ELD (Extraordinary Low Dispersion) glass has lower dispersion characteristics than SLD (Special Low Dispersion) glass, which Sigma has been using in its APO lenses (and some non-APO lenses as well) for many years now. It has other advantageous properties as well.

My lens is front/back focusing; is there something wrong with it? What should I do?

Please do not panic and do not return your lens. In the majority of cases, there is nothing wrong with your lens; each lens is manufactured in exactly the same way and adjusted on an optical collimator which is used to calibrate the lens, check if all elements are aligned optically and to set elements at the proper focus. The issue of front and/or back focusing, most likely, comes as a result of the viewfinder focusing system which varies in each and every camera. This is a quick solution to this situation.

If you are experiencing front and/or back focusing issues, we urge you use the “AF fine tune” or “Microfocus Adjustment in your camera’s menu to calibrate your lens to the camera. If this feature is not available in your camera’s menu we will ask you to send the lens to us and we will rewrite the AF Data to accommodate for the variation in your camera’s viewfinder focusing system; essentially, calibrating your lens to your camera. This will be done within a 48 hours of receiving your equipment in our headquarters; 15 Fleetwood Ct. Ronkonkoma, NY 11779 Attn: Service dept. During the Warranty period of the product (subject to warranty eligibility), there is no charge for this service and we cover the cost of the return 3 day ground shipping back to you.

In 2013 Sigma introduced our Global Vision lens line along with the USB dock, an accessory sold separately allowing you to calibrate the AF Data of any Global Vision lens. To find out more information, consult the USB dock page.

Some Sigma lenses are designated "DG". What does this mean?

The DG designation applied to most newer Sigma lenses indicates that the lens is especially suited for use with digital SLR cameras. The DG lenses feature improved (more even) light distribution from image center to edge, and incorporate the latest multi-layer lens coatings to avoid reflections of the sensors of digital cameras. This is important in digital photography, but is also useful in 35mm photography, especially when slide film is used. Lenses designated as DC are designed exclusively for use with digital cameras having APS-C size image sensors. They feature smaller image circles and often feature shorter focal lengths (e.g. 10-20mm DC, 17-70mm DC, 18-50mm DC, 18-200mm DC, etc.). The shorter focal lengths are desirable, because most digital SLR cameras have image sensors whose dimensions are considerably smaller than a 35mm negative (usually by a factor of 1.3X to 2.0X), making the lens’ angle of view equivalent to that of a longer lens on a 35mm cameras.

What are APO lenses?

Apochromatic lenses are telephoto and telezoom type lenses which use special optical designs and optical materials (SLD or ELD glass) to improve their performance. The result is images which have greater contrast, sharpness and color definition than a comparable non-APO type lens . All Sigma apochromatic lenses are identified by the APO designation in their descriptions. Please see the Lens Chart for this and other specific lens information.

What are Aspherical lenses?

Many Sigma lenses make effective use of Aspherical lens elements. This technology allows one Aspherical lens element to perform the functions of two or more conventional spherical elements, thus allowing the lens to be made more compact and lightweight, while retaining high levels of performance. In the 20mm f/1.8, 24mm f/1.8, 28mm f/1.8 EX DG lenses, for example, these Aspherical elements eliminate the sagittal coma flare that accompanies large lens diameters. They effectively suppress the flare. In zoom lenses, where the wide angle range is extended - such as the 15-30 f/3.5-4.5 EX DG - distortion control can be enhanced by the use of Aspherical elements.

What are Macro lenses?

Macro lenses are those which can focus unusually close, providing large reproduction ratios (e.g. 1:3, 1:2, 1:1, etc.) Sigma offers more lenses with macro capabilities than any other lens or camera maker. The choice of which lens to use depends on the application.
The shorter lenses, 50mm and 105mm provide greater magnification (reproduction ratio) capabilities (1:1 without accessory), and shorter working distances. These are desirable for photographing inanimate or slow moving subjects or for copy work. The 105mm f/2.8 EX Macro lens can also be useful for portraiture.
Longer Macro lenses like the 180mm f3.5 EX APO Macro can allow even greater working distance while still providing up to 1:1 reproduction. Greater working distances are useful when photographing animate subjects which may become evasive or aggressive if approached closely by a photographer.
Sigma offers several zoom lenses (e.g. 70-300mm F4-5.6 DG Macro) which combine reproduction ratios up to 1:2 with the convenience and versatility of a zoom lens. These can be invaluable for general photography including extreme close-ups, while carrying only one lens around.

What does HSM stand for and what is it?

HSM stands for Hyper Sonic Motor. It is a new type of motor used in some of Sigma’s newer lenses. The technology employed is similar to that used in certain lenses made by other camera manufacturers. The benefits of HSM system are: virtually silent autofocus function, very quick responsive autofocus function. Sigma is the only independent lens maker offering lenses with this technology. We have a number of HSM type lenses for Canon and Sigma AF cameras, and we also have several HSM lenses for Nikon AF cameras (N55, N65, N70, N75, N80, N90, N90S, F100, F4s, F5, D1, D1X, D1H, D100 and D70, as well).

Where are Sigma lenses made?

All Sigma products, lenses, cameras and flash units are manufactured exclusively by Sigma in Sigma’s own factory in Aizu, Japan. No Sigma Corporation product - lens, camera or flash - is manufactured outside of Japan. This is very unusual these days, as most companies have at least some of their products produced outside of Japan because of cost considerations.

Flash Questions

As I zoom my lens, my flash’s zoom head does not work.

Ensure the 17mm Wide Panel is not down and covering the flash head as this will stop the zoom mechanism from working.

My flashgun does not charge up.

Check the batteries have sufficient power in them. Check the contacts are clean and the batteries have not leaked.
If the problem persists, please return your flashgun for inspection. Details here.

The exposures from my flashgun seem to be erratic.

Ensure you are using the correct fitting flashgun, ie. a Canon fit gun on a Canon camera. Ensure the flash / camera is not on Manual mode. Ensure the 17mm Wide Panel is not covering the flash head. If using a digital camera, ensure the model is compatible See our compatibility chart for details. We suggest using spot metering for more accurate results. If the problem persists, please contact us for further information.

Discontinued Cameras

Can I pre-lock the mirror on the SD10 camera to minimize vibration?

The SD10 digital SLR camera has mirror lock-up capability. This can be very useful to minimize image-degrading vibration, when using long lenses or longer shutter speeds. Once this function is turned on, the mirror can be locked-up by simply depressing the shutter release button fully. Pressing the button a second time fires the shutter and returns the mirror to the normal viewing position. The mirror also can be locked up, and then the shutter fired remotely, if the optional RS-21 remote controller is used. This sequence can be repeated indefinitely, until the function is turned off.

Can I use my Canon EOS lenses on the SD10 digital camera?

The Sigma SD10 uses Sigma’s exclusive SA lens mount, the same as used on Sigma’s 35mm SLR cameras. There is a full array of lenses available, from 8mm Circular Fisheye to 800mm APO telephoto, including three 1:1 macro lenses; and zoom lenses from 10-20mm to 300-800mm. By the way the SD10 features a stainless steel camera mount , and all lenses for it feature metal lens mount.

Does the SD10 camera have a depth-of-field preview?

Yes, like Sigma 35mm SLR cameras, the SD10 digital SLR features an electronic depth-of-field preview button, which can be used in any exposure mode.

How fast can I take pictures with the SD10 camera?

The SD10 can shoot approximately maximum 1.9 frames per second in bursts of up to 6 frames at high resolution, approximately maximum 2.4 frames per second in bursts of up to 14 frames at medium resolution, and approximately maximum 2.5 frames per second in bursts of up to 30 frames at low resolution mode.

I wish to use an SD10 digital camera to photograph lightning. What is the shutter release lag time for this camera? Does Sigma make a remote triggering device for Sigma cameras enabling photography of lightning?

The shutter release lag time has be estimated to be about 58 milliseconds. This is comparable to the faster 35mm SLRs, so the SD10 should be well suited capturing images of lightning. Sigma (and other camera makers) does not offer a remote triggering device, suitable for this application; however, such devices are offered by other independent companies. One such company is Stepping Stone Products, in Colorado (www.lightningtrigger.com). They can also be reached at (800)452-4167 for more information.

If dust gets on the SD10 dust protector, will it appear in the image?

No, the dust protector in the SD10 camera is located near the camera’s lens mount, at the front of the camera, so it is far away from the image sensor. Any dust or debris on the dust protector will never come into sharp focus at the image plane. The dust protector virtually seals the entire mirror box, protecting not only the image sensor, but also the reflex mirror and the viewing screen as well.

What is this feature called Sports finder which I’ve read about?

The SD10 digital SLR camera has a unique feature pertaining to its viewfinder. It allows the finder to show 130% of the picture area. This is very useful, as it enables you to see what is happening outside the picture area, allowing you to anticipate people or objects entering the picture. This can be especially desirable for action photography, like sports, etc. The active picture area is visible at normal brightness, while the peripheral areas are masked with neutral density, making it easy to differentiate the two.

What kind of metering system does the SD10 camera use?

The SD10 camera actually has three metering systems, an eight-zone evaluative system, plus center-weighted averaging and center area (about 7.5%). Users can select any metering system while in any exposure mode.

Who makes the SD10 camera?

Sigma makes all of our own products, lenses, flash units and cameras, in Sigma’s own factory, in Japan. However, the X3 image sensor in the SD10 is made in America, by Foveon.

General Questions

A dealer tells me that he buys special "Pro" or "Gold Series" type lenses directly from the Sigma factory, and that they are better (and more expensive) than the Sigma lenses, which other dealers are selling. Is this true?

No. No dealer can buy Sigma brand lenses directly from the Sigma factory. Also, the Sigma factory does not make special Sigma brand lenses for any retailer. The cost for such customized products would be prohibitive. Sigma Corporation of America is a wholly owned subsidiary of the factory (Sigma Corporation) in Japan, and we buy all Sigma brand products, which the factory manufactures.

I purchased a Sigma lens from a dealer. When I received the lens I noticed that it came without a warranty. When I inquired to the dealer about this, he told me not to worry as Sigma will still honor the warranty. Is this true?

I recently purchased a new Sigma lens from a dealer. When I received the lens I noticed that it came without a warranty. When I inquired to the dealer about this, he told me not to worry as Sigma will still honor the warranty. I’m uncomfortable about this situation and am asking you to confirm this. The lens I received is a XXmm f/XX lens for my XXXXX brand camera, and has serial number #233XXXX.

The lens you received has a serial number which has not been issued by Sigma’s factory in Japan. It appears that the lens you received is a "Gray Market" lens, and has been tampered with having its serial number changed. This would explain why you received no factory warranty card with the lens; the serial number printed on the warranty card at the factory, would not match the number on your lens. The Sigma lens should always be supplied with the factory warranty card, which is necessary to help verify the factory warranty. This altered serial number has implications for the Sigma one-year international warranty, as well as any extended warranty, since tampering or modifying the product can cause the warranty to be voided. We suggest that you contact the dealer regarding this situation, immediately. Perhaps they will accept the lens back from you and supply you with a legitimate US import lens with full Sigma factory warranty.

I sent you an e-mail several days ago; and I have not received a response, yet. Do you answer e-mails?

Yes, Sigma Corporation generally answers e-mails within 24-48 business hours.

General Service

Can I use different types of lens hoods on my Sigma lens?

No. All our lens hoods are matched exactly to the lens they are supplied with.

Can you send me a printed lens brochure?

Yes, just phone or email us and we will post you a printed brochure. Alternatively, click here to download a PDF version.

Does Sigma make adaptors so I can use my lens on a NEX or Micro 4/3 camera?

No, Sigma manufactures all our lenses for the specific camera intended. For NEX and Micro 4/3 we have our DN line of lenses.

I am getting a dark area at the bottom of my pictures when using my camera’s built-in flash.

This is due to the lens hood blocking part of the light from the flashgun. Either remove the hood from the lens or purchase an external flashgun such as the EF-610 DG ST.

I am looking to buy a macro lens and I notice Sigma offer different types. How do I choose between them?

Each of the Sigma prime macro lenses offer up to 1:1 (Life-size) reproduction images, but at different working distances. For example, the 50mm lens provides the shortest working distance and the 180mm lens the longest working distance. Therefore, if you are looking to do copy or reproduction work, the 50mm is likely to be your best choice. If however you photograph small insects, the 150mm or 180mm may be better suited as these allow you to stand a little further away from the subject whilst still giving you the same image. This may prevent disturbing the insect. All provide excellent optical performance, and are fully compatible with current 35mm AF and digital SLR cameras.

I have a Sigma lens on my Nikon body and ‘FEE’ is displayed on the cameras’ LCD.

Simply turn the lens’ aperture ring to the minimum aperture (eg. f/22) where it will lock into position. This is usually indicated by an orange dot.

I have heard I could get my old Sigma Lens “Re-Chipped”; is this possible?

Unfortunately you can’t have your lens “Re-Chipped”. In 2005 Sigma Introduced “Re-Writeable Firmware” to our DG and DC lenses enabling us to update a lens due to manufacturers changes in software or hardware.

I have just purchased a new Sigma optically stabilized lens and notice that the lens makes a slight noise and movement when I half press the shutter button. Is that normal?

OS lenses do make a soft noise upon start up. This noise emits whilst the OS system is setting into position. Once the OS is set, generally after one or two seconds, the noise will stop. This is completely normal for OS lenses.

I have just purchased a Nikon D40x/D3000/D5000/D3100/D5100 camera and the auto focus of my Sigma lens will not work with it. Is the lens faulty?

Unlike most cameras, the Nikon D40x/D3000/D5000/D3100/D5100 does not have an auto focus motor built into the camera. Therefore, auto focus will only work with our HSM lenses as these have a motor built into the lens.

I have several specs of dust in my lens. Will this affect my pictures

No. This will make no difference to image quality as the dust is too far away from the sensor. If you do have dust specs on your pictures, this will be due to dust particles on you image sensor.

I understand Sigma makes 1.4x and 2x tele-converters. Do these converters work on all Sigma lenses?

Our tele-converters are matched to work with a few Sigma telephoto lenses and are therefore not compatible with all our lenses. For a full chart of compatible lenses, click here.

I would like to use a filter on my 15mm fisheye lens but I can only use a gelatin filter, why is this and where can I buy them?

Due to the ultra-wide angle shooting capabilities of lenses such as the 15mm, front filter use simply is not possible. It would damage the front element of the lens and cause heavy vignetting on the images.

My front element is chipped.

Small chips are unlikely to make any difference to the picture quality and therefore generally do not require further action. Larger chips may cause flair under certain lighting conditions. If you feel this may be the case please contact us.

My lens makes a loud, grinding noise when I manual focus.

Ensure that the camera / lens is in MF mode when manual focusing otherwise this could cause damage to the gearing system.

The zoom action of my lens keeps slipping when I point the lens down.

Many lenses have large and heavy front optics which cause zoom creep. We suggest pointing your lens up or down 45 degrees to the horizontal.

There are many abbreviations used by Sigma in the name of your lenses, such as APO and DG. Can you explain what these mean?

Each abbreviation has its own meaning and is an important part of the lens' construction and design. For detailed descriptions of each abbreviation, please click here to visit the lens technology page on this website.

What is the difference between 50/2.8 EX macro and 105/2.8EX Macro with Life Size Magnification?

The image of the subject, which is taken by both lenses, will have same magnification; however the size of backgrounds will be different. The picture, which is taken by 50mm/f2.8 EX Macro Lens, will have wider background if compared with the 105/f2.8 Macro Lens. Further, lens to subject distance will be different for making life size pictures with both lenses. The subject to lens distance for 50mm/f2.8 is 40.5mm/1.7in., however this distance is 120mm/4.7in., for 105/2.8EX lens.

What is the difference between built-in HSM lens and DC-motor lens?

With conventional auto-focusing, auto-focus is driven by electromagnetic force of a DC-motor, gear and shaft mechanism. However, Ultrasonic Oscillation Energy operates the HSM lens and creates high-torque drive. Since this motor has no reduction gears, it has much quicker response to start and stop compared to DC- motor lenses. HSM system, available in select models, has virtually silent auto focus function, very quick responsive auto focus function and "full-time" manual focus, wherein AF can be overridden without disengaging the AF mode altogether.

What is the main difference between a DC and a DG lens?

DC lenses are designed for cameras with an APS-C size sensor and won’t cover the entire image area of a 24x36mm (Full Frame) sensor. DG lenses are designed for cameras with a 24x36mm (Full Frame) sensor but will work equally as well on a camera with an APS-C sensor.

When attaching my old Sigma lens to my new Canon digital camera, an Error99 message appears.

This could either be due to the lens’ iris or the lens’ circuit which may need upgrading. Please contact us for further details. To speed up you enquiry, please have the exact model number and serial number of your lens on hand.

You use the term ‘Minimum Focusing Distance’ on all your lens specifications. What does this mean?

This is the distance from the film plane/image sensor to the subject. Many people assume it is the distance from the front of the lens however it is measured from the film plane. The shorter the Minimum Focusing Distance, the closer you can focus on the subject.

Mount Conversion Service

Are all the Sigma lenses supported by this service?

Only Sigma lenses from our new three product line (Contemporary, Art and Sports) will be eligible.

Are there any restrictions of function after the mount conversion?

No. The function of the lens will be the same as it was upon original release.

Can I request to convert to any mount of my choice?

Yes, as long as the lens in the requested mount has been released by Sigma as a product.

Does the serial number change after the mount conversion?

No. The serial number will remain the same as the original lens.

Each mount has an OS and non-OS version, how will each scenario be handled?

Each product will be handled according to their specifications, i.e., 17-70mm F2.8-4 DC Macro; a Canon mount is to be changed to Sony, it will be non-OS with a different switch part.

How can I request this service?

Please contact Sigma America Service dept. via email at Info@sigmaphoto.com or by phone: 631-227-2036. Outside of the U.S. please contact your nearest country representative directly: http://www.sigma-photo.co.jp/english/network/index.html.

How long after my lens purchase can I consider the Mount Conversion Service?

We will support lenses for 5 years after they have been discontinued.

How long will mount conversion take?

Please allow 2 to 4 weeks for the mount conversion service to be completed.

How much does Mount Conversion Service cost? (with warranty & outside of warranty)

This is a paid service regardless of warranty. Please refer to Service and Support page for pricing.

How will this service be managed?

Until further notice all serviced will be managed and completed by Sigma in Japan.

I understand that the serial number will not change. What happens if the engraved part needs is exchange?

We will exchange that part with a part reflecting the same serial number. If for any reason the serial number does need to be changed, we will advise you in advance.

If the lens was customized using the USB Dock, what happens to the data?

Data including ones adjusted at service center will all be reset and the lens will be initialized.

Is it possible to revert to the original mount?

Yes, please request the service again, and we will proceed with another mount conversion as a new request with a new charge.

Is there any risk of performance degradation after the mount conversion?

Please be assured that mount conversion will be completed on the basis of the measuring system and concept exactly as it is with our three new product lines.

Is this service offered worldwide?

Yes, this is a service offered worldwide.

Should the parts exchanged be returned to the customer?

It depends on each country’s standard for repair that contains parts exchange.

What is the warranty for this type of service? What if I am still within my 4 year USA warranty?

The warranty for this service is 6 months and if you are within your 4 year warranty, you can continue the remaining time of your original warranty. If your warranty is expiring in less than 6 months and you are planning to receive this service, the remaining balance of the “6 month mount conversion warranty” will be added to your original warranty.

With this service, can I exchange my lens for a new lens?

No, we will only replace the key components and mount part of your lens. Optimization will be performed so that you can use it on your new camera.