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RF 400, or EF 400 with adapter?

Started Jul 11, 2021 | Discussions thread
Tambopata Regular Member • Posts: 164
Re: RF 400, or EF 400 with adapter?

BirdShooter7 wrote:

cjb wrote:

Optically the same.

EF works on more systems: DSLR and other systems with adapters.

EF allows use of control ring adapter (I don't think I'd use this honestly - too far back.)

EF allows use of variable ND drop-in EF-RF adapter. Helpful for landscapes.

RF has more pins and the possibility of taking full advantage of R1 and R3 speed. It might focus a fraction faster with those systems. But Canon is not saying and no one outside of Canon knows for sure.

RF has one less mechanical coupling. It should be slightly stiffer.

It's a close call. I'd pick the EF version today. For the flexibility. But tomorrow?

The higher speed communication could also benefit the image stabilizer as well.

It might increase AF prescision as well. I do believe that the RF extenders will produce better details with the RF 400/600 than the EF extenders do with the EF 400/600.

 Tambopata's gear list:Tambopata's gear list
Canon EOS R5 Canon EF 600mm f/4.0L IS II USM Canon RF 24-105mm F4L IS USM
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