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Canon R7, Ef 100-400 ii and 1.4 Tc Bif Photos. Are these acceptable?

Started 1 month ago | Questions thread
KevinRA Senior Member • Posts: 1,457
Re: Canon R7, Ef 100-400 ii and 1.4 Tc Bif Photos. Are these acceptable?
1

OlcayK wrote:

KevinRA wrote:

Some of these - I'd say yes OK and as expected.

https://1.img-dpreview.com/files/p/E~forums/66890948/82ffd85795fe4dba8e529ea4d3f64214

So the R7 is in effect already a 1.4X TC over a 7D or 7DII - which the 100-400 when it came out was designed for. So in effect 1.4X TC on the R7 is like a 2X on the 7D - and the rule then was only the best prime lenses were really worth it with 2X TC's.

You are also at ISO 640-800 - so at pixel level will see some noise at 100% on the R7. Take the sharpest ones - put through DXO deep prime XD with lens sharpness off - then try topaz sharpen AI to sharpen up and some of these will then likely look OK.

I never bother with the 1.4X TC on the EF100-400 with the M6II, R10 or R7. Not worth it.

Yes when you zoom so much it starts to look noisy. Normally I do the same as you mention. Run through dxo first and then edit in lightroom. So 1.4 tc doesn't improve iq. I should use it when the bird fiils the frame then. Maybe one stop closing at f11?

Hi

Problem with f/11 is on the R7 you are now into more significant diffraction softening territory.... plus one stop worse noise and dynamic range over f/8.

I own and like the EF 100-400 and dont want to shell out for the RF 100-500.  I just accept smaller but sharper and high hit rate images when using it without a TC on R10/F7/M6II

 KevinRA's gear list:KevinRA's gear list
Canon EOS M6 II Canon EOS R5 Canon EOS R7 Canon EOS R10 Canon EF-S 60mm f/2.8 Macro USM +14 more
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