Testseek.com have collected 3 expert reviews of the Canon EF 400mm f/4.0 DO IS and the average rating is 0%. Scroll down and see all reviews for Canon EF 400mm f/4.0 DO IS.
-
3 Reviews
Average score from experts who have reviewed this product.
Abstract: The Canon EF 400mm f/4.0 DO IS USM Lens is Canons first DO (Diffractive Optics) lens - yielding 400mm f/4 IS performance in a relatively small and light handholdable package. Small and light are of course relative. Someone used to shooting with a Can...
佳能率先开发出相机用“DO(Diffractive Optics)镜片(多层衍射光学镜片)”。上代EF 400mm f/4 DO IS USM与400mm f/4镜头相比，通过配备DO镜片，实现了全长84.3mm、重量920g的小型轻量化。而本文中的EF 400mm f/4 DO IS II USM应用了第三代DO镜片技术，该技术进一步减少眩光生成，提升画质。我们可以看到佳能跟尼康刚起步不同（PF镜片），已经从“无到有”阶段进化到“坏到好”阶段，改进方向更加专注镜头成像素质本身。从上文实拍来看EF 400...
Abstract: Roger在LensRentals.com做了两篇佳能新镜头的分辨率测试，第一篇是EF 400 f/4 DO IS和EF 400 f/4 DO IS II分辨率对比，第二篇则是EF 100-400 f/4.5-5.6L IS和EF 100-400 f/4.5-5.6L IS II：LensRentals.com 佳能EF 400 f/4 DO IS和EF 400 f/4 DO IS II分辨率对比从测试来看，佳能EF 400 f/4 DO IS II和老款EF 400 f/4 DO IS分辨率差距明显，尤...
