Lens Resources

  • FOCAL LENGTH SIMULATOR

    The focal length changes the angle of view in an image. The longer the focal length, the smaller the angle of view and the greater the magnification.

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  • SIGMA LENS TECHNOLOGY

    Learn about the state of the art technology put into Sigma lenses to ensure high quality images.

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  • LENS TELECONVERTER COMPATABILITY CHART

    Get more reach with what you have. Check the compatibility of your lens with the teleconverter chart.

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  • LENS CHART

    Need more information on a lens? Cross reference all the specs using the lens chart.

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  • DC LENS COMPATABILITY CHART

    Check the compatibility of DC (APS-C sized sensors) lenses.

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  • LENS CHART FOR RECENTLY DISCONTINUED LENSES

    Get all the information you need on discontinued lenses.

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  • MTF CHART GUIDE

    See how a lens performed using the Modulation Transfer Function (MTF) Chart Guide. The MTF is just one criterion used to evaluate lens performance.

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