Sigma's new 300-600mm f/4 is a mythological BEAST of a lens, and here's why
The Sigma 300-600mm f/4 DG OS Sports puts fast 600mm lenses firmly in the ballpark of the enthusiast photographer. We truly ...
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'Canon 600mm f4 review vs 600mm f4 ii' Features
In this section you'll find photographic features that explore holidays and photography courses, details about members meetings, trials and tribulations of installing new software along with ...
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佳能将更新RF400/2.8L IS USM和RF600/4L IS USM
佳能在2021年推出了RF 400mm f/2.8L IS USM和RF 600mm f/4L IS USM，但它们在光学设计上与EF卡口相同。佳能等EOS R5、EOS R3等相机发布后，才把它们带到RF卡口上。