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Anybody owned, or used the Canon 400mm f/4 DO IS II on....

Started 4 weeks ago | Discussions thread
ThrillaMozilla Veteran Member • Posts: 7,665
Re: Anybody owned, or used the Canon 400mm f/4 DO IS II on....

The aperture is 400mm/4 = 100 mm, vs. 71 mm for the 800/11. Thus, lower magnification, but twice the light captured per duck.  71% of the shot noise, and theoretically resolves details 71% as large, assuming diffraction-limited.

That 800 looks pretty good.

 ThrillaMozilla's gear list:ThrillaMozilla's gear list
Canon EOS Rebel SL1 Canon EOS M6 II Canon EF 400mm f/5.6L USM
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