K&F Concept adapter for Contax Yashica CY mount lens to Canon EOS camera 60D 5D3
10. Mär 2020
Great inexpensive way to use C/Y mount lenses on Nikon Z cameras...
Simple and solid. No problems with infinity focus.
Canon EF 100-400mm f/4.5-5.6L IS II USM Lens 9524B002
28. Mär 2017
Sharpness and reach Vs Contrast
Compared to the venerable Canon 70-200 2.8 IS versions I & II, this lens has better image stabilization (you can hand-hold super-sharp shots at 400mm at 160th of a sec and up), is sharper at 100mm, has incredible reach out to 400mm. The 70-200 beats it in contrast and color rendition in low light conditions and in the range around 150-200mm. In low light at 400mm, this lens has vignetting and soft contrast, but what do you expect for a 400mm lens that you can hand-hold? Pretty incredible lens overall. Also note, it close focuses at around 1 meter, which means it functions as a pretty nice macro/portrait lens.
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Pilot manual for the P-51 Mustang pursuit airplane
27. Mär 2022
Wanna' fly the P51d?
Great for pilots who want to know the details on flying this great war bird.