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R5 with 100-500 + 1.4tc vs R7 with Canon 100-500

Started 7 months ago | Discussions thread
OP kristian1 Veteran Member • Posts: 3,035
Re: Re shoot (more precise focusing)
1

drsnoopy wrote:

Interesting comparison. On your second test, I still see a slight advantage to the R5.
However I have a question - what did you do to get the image scale identical? The R7 image should be 14% larger (800mm EFL vs 700mm FL). Did you zoom back to 437mm on the R7 to get 700mm EFL? In which case the different position of the zoom lens elements could affect the results. Or did you match the sizes by using different magnification on-screen in Lightroom? In which case apparent resolution is affected by interpolation (fractional magnifications show best screen resolution at 16.7, 25, 33.3,50, 66.7 and 75%, scales in between appear less sharp) - you would need about 87% on the R7 vs 100% on the R5.

Just interested to know what you did - not intended as a criticism, but to point out that there are confounding factors in such a test.

You forgot that r5 has higher mp count. It is 700mm at 45mp vs 800mm at 32mp.
Both images are at 300% of course , and lens is at 500mm in both cameras.

R5 image has slight higher magnification.

Kristian

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Canon EOS R Fujifilm GFX 100 Canon EF 500mm f/4.0L IS II USM Fujifilm GF 32-64mm F4 Fujifilm GF 23mm F4 +4 more
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