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Comparison of RF 1200mm f/8 L and EF 600mm f/4 L II with 2X III

Started 6 months ago | Discussions thread
JohnMoyer Regular Member • Posts: 356
Re: Comparison of RF 1200mm f/8 L and EF 600mm f/4 L II with 2X III

An even lower budget path to long focal length.

Since I was stuck at home, I experimented with stacked teleconverters. Hand held, auto focus, F number of 18 when wide open would be 16, motion blur, diffraction blur, very slow AF, DPP digital lens optimizer, focus limiter switch set to full range. With this combination if there is low contrast then AF will bang back and forth between near and far.

Monarch Butterfly (Danaus plexippus) on Zinnia in Norman, Oklahoma, United States on October 5, 2022. Focal Length 1120.0 mm, EF100-400mm f/4.5-5.6L IS II USM +1.4x III + Kenko TELEPLUS HD C-AF 2X DGX

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