Sigma 70-200mm 2.8 + Kenko 36mm ext tube
by darerecich
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Three Nikon and Two Sigma Lenses Tested with Kenko Pro 1.4x and 2.0x Telextenders
by Harry Lavo
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Kenko Pro 300 Performance Shortfall Tests
by Harry Lavo
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SIGMA 150mm +Kenko
by Rüdiger Kukasch
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200mm/2.8 Samples
by Tom
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Cobbled-together Macro (120mm f/2.5)
by Harry Lavo
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Nikon 80-200 2.8D ED IF & Sigma 70-300 APO Lens Tests w,w/o Extenders (Work in Progress) (
by Harry Lavo
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600mm Equivalent Lens Test
by Harry Lavo
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Nikon D1X, D7000 vs D300 Resolution with Tele Lens
by Harry Lavo
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Easthampton as Tele-Viewed from Mt. Tom
by Harry Lavo
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