loss of sharpness 100-400 using R5 and adapter

[bobbieturner1]

I have been noticing my bird shots are not as sharp as they use to be using the Control ring mount adapter EF_EOS R for the 100-400L vii lens. I decided to do a test comparison between the R5 and the 5Dm4. I kept all settings the same on both cameras. When I manual focused I used the LCD magnifier to be exact. At first I thought it may be the lens. But comparing between both cameras, I definitely see I get sharper photos with my 5D! Are we losing something when we put the adapter on? see the photos below. Is it the adapter? communication? 

[Waddizzle]

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@bobbieturner1 wrote:
no camera shake since it was on a tripod of course. I will repost with actual exposure settings.

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That is a false assumption.  It depends on the quality of your rig, and mirror lockup is advisable for critical focus, especially at 45MP.  Also, did you have IS turned on or off.  Like I said, your "test" appears to be fundamentally flawed on many levels.

[kvbarkley]

Mirror lockup?

Depending on the raw processor, different amounts of sharpening may be applied for the default settints, which may vary between cameras.

[bobbieturner1]

Yes IS was off. However when I went back to check my R6 I noticed I had it set on mechanical shutter.
The bottom line is my images are not as sharp as my 5D and I have to figure it out. I have to figure out how not to have a “flawed” test and do it again.

[Waddizzle]

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@kvbarkley wrote:

Mirror lockup?

Depending on the raw processor, different amounts of sharpening may be applied for the default settints, which may vary between cameras.

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Yeah, I know.  Mirrorless.  Electronic shutter, then.  Irregardless, leaving IS turned on would be a mistake.

[bobbieturner1]

No I did not do mirror lockup and yes I turned off my IS on the lens.

[Waddizzle]

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@bobbieturner1 wrote:
Yes IS was off. However when I went back to check my R6 I noticed I had it set on mechanical shutter.
The bottom line is my images are not as sharp as my 5D and I have to figure it out. I have to figure out how not to have a “flawed” test and do it again.

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I see.  Have you tried comparing AF, too?  Right now, it looks like you simply missed focus on the R5.

BTW, when did we switch from the R5 to the R6?

[bobbieturner1]

Yikes. I meant R5

[Windsun33]

Canon just put out a firmware update for that lens.

[johninbigd]

I'm having the same problem with my R5. I've done a few shoots with it and my results are absolutely not as sharp as with the EOS R. It's really frustrating and I haven't figured out the cause yet. 

[jrhoffman75]

FWIW:

Canon R5 Sensor Misalignment Issue CONFIRMED – No Sharp Images with Any Lens – Edit Photography