17-70mm F2.8-4.5 DC Macro
- Designed exclusively for use with smaller chip APS-c sensor
- Close focusing down to only 8” away for a 1:2.3 magnification which is approximately ½ life size
- SLD (Special Low Dispersion) glass element provides optimum color correction & sharpness
- Two aspherical lens elements provide critical sharpness & low distortion
- A Super Multi-Coating is used to reduce the occurrence of flare & ghosting and delivers high performance across the entire focusing range
SPECIFICATIONS
| Lens Construction | 15 Elements in 12 Groups | ||||||||
| Angle of View | 72.4º-20.2º (1) | ||||||||
| Number of Diaphragm Blades | 7 | ||||||||
| Mininum Aperture | fF22 | ||||||||
| Minimum Focusing Distance | 20 cm / 7.9 in | ||||||||
| Filter Size (mm) | 72mm | ||||||||
| Maximum Magnifications | 1:2.3 | ||||||||
| Dimensions (Diameter x Length) |
79x82.5 mm/3.1x3.2 in | ||||||||
| Extended Dimensions | 123 mm / 4.8 in | ||||||||
| Weight | 455g / 16oz. | ||||||||
| Corresponding Mounts |
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D - Distance Information Function J - J type Pentax AF mount lens (1) Angle of view at Sigma SD camera format (3) Pentax mount lenses cannot be used with SF series AF cameras. * The appearance, specifications, and the like of the product are subject to change for improvement without notice. | |||||||||
MTF CHART
LENS CONSTRUCTION
Sigma’s 17-70mm F2.8-4.5 DC Macro is the practical zoom! A large-aperture, standard zoom lens for digital cameras with an open-aperture value of F2.8 (at 17mm) and covers the most frequently used focal lengths. With an aperture fast enough to be used in many light situations, it’s close focusing for use with very small object and its outstanding optical performance make this is an ideal all-around lens for landscapes, portraits, still life studies, group shots and just about any everyday photo situation. With a faster aperture than the typical camera “kit lens” it is an excellent choice for the photographer who has higher expectations for their photo equipment.
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- Specs:
- f/8 1/125
- ISO:
- 100
- Camera System:
- Sigma
- Credit:
- Peter Chen
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- Specs:
- 5.0 (+1/3) 1/80
- ISO:
- 400
- Lens:
- 17mm
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- Specs:
- 8 250
- ISO:
- 200
- Lens:
- 17 70 mm 2.8 4.5
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- Specs:
- f/16 1/60
- ISO:
- 800
- Lens:
- 17-70mm DC Macro
- Credit:
- Bud Force www.budforce.com
-
- Specs:
- f 5 1/30
- ISO:
- 100
- Camera System:
- Canon
- Credit:
- Jorge Enrique García Melo
-
- Lens:
- Sigma 17-70mm
- Credit:
- Peter Choo
-
- Specs:
- F6.7 1/180
- ISO:
- 400
- Credit:
- Lorenzo
-
-
- ISO:
- 400
- Credit:
- Andrei Avila
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