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20mm F2 Sigma DG DN Lens
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    Specs

    • 13 elements in 11 groups, with 1 FLD, 1 SLD and 3 aspherical elements
    • Inner focus system
    • Compatible with high-speed autofocus
    • Stepping Motor
    • Compatible with Lens Aberration Correction
    • Support DMF and AF+MF
    • Nano Porous Coating
    • Super Multi-Layer Coating
    • Aperture ring
    • Focus Mode Switch
    • Petal-type lens hood (LH656-03)
    • Magnetic metal lens cap (LCF62-01M)
    • Mount with dust and splash resistant structure
    • Support for switching between linear and non-linear focus ring settings (for L-Mount only)
    • Compatible with SIGMA USB DOCK UD-11 (sold separately / for L-Mount only)
    • Designed to minimise flare and ghosting
    • Every single lens undergoes SIGMA's proprietary MTF measuring system
    • 9-blade rounded diaphragm
    • High-precision, durable brass bayonet mount
    • 'Made in Japan' craftsmanship
    • Lens construction: 11 groups, 13 elements (1 FLD, 1 SLD and 3 aspherical elements)
    • Angle of view: 94.5-degrees
    • Number of diaphragm blades: 9 (rounded diaphragm)
    • Minimum aperture: F22
    • Minimum focusing distance: 22cm
    • Maximum magnification ratio: 1:6.7
    • Filter size: 62mm
    • Dimensions (max diameter x length): 70mm x 72.4mm
    • Weight: 370g

    Scheme

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  • 5 Replies sorted by
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  • It's an interesting lens, it isn't as good as the Sony, but it isn't as expensive as the Sony. But it isn't much less than the Sony. So, there's no reason to buy it.