Sigma 10-20mm vs. Nikon 17-35mm Test
by Michael Ng
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CZJ MC Flektogon 20mm F2.8 (M42 mount)
by koji kawakami
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Canon EF 16-35mm f2.8L
by Yu-Lin Chan
| 
minimum focus distance
by Derrel
| 
Lens Test - Nominal IV - Corners
by Ian Grey
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Prakticar 20mm F2.8 (Flektogon 20/2.8)
by koji kawakami
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EF 18-55mm w/ 20mm Extn-Tube & 24-105mm f4 L + Extn-Tube
by Trevor Benedict
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Wide Field
by Rodney's Astrophotography
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Fuji 25mm f1.4 CCTV lens versus Panasonic Lumix 20mm f1.7
by Richard
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AF 20mm f/2.8D f/8.0
by vsk
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