600mm f/6.3 is a great travel lens, wish it was f/5.6
Unlike the 600 f/4 GM it does not include any aspherical elements or Calcium Fluoride elements instead it uses super ED and ED glass... key to keeping the cost manageable. The optical performance is not going to be 600 f/4 GM level but it is probably better than any zoom lens and or zoom + TC combo. I will do some measurements on the lens when I receive it
600mm f/6.3 is a great travel lens, wish it was f/5.6
Unlike the 600 f/4 GM it does not include any aspherical elements or Calcium Fluoride elements instead it uses super ED and ED glass... key to keeping the cost manageable. The optical performance is not going to be 600 f/4 GM level but it is probably better than any zoom lens and TC combo. I will do some measurements on the lens when I receive it
600mm f/6.3 is a great travel lens, wish it was f/5.6
Unlike the 600 f/4 GM it does not include any aspherical elements or Calcium Fluoride elements instead it uses super ED and ED glass... key to keeping the cost manageable. The optical performance is not going to be 600 f/4 GM level but it is probably better than any zoom lens and TC combo. I will do some measurements on the lens when I receive it
Sep 15, 2026 at 11:38 PM
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