topic Re: loss of sharpness 100-400 using R5 and adapter in EOS DSLR & Mirrorless Cameras

loss of sharpness 100-400 using R5 and adapter

bobbieturner1 — Sun, 01 Nov 2020 15:34:36 GMT

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?

Re: loss of sharpness 100-400 using R5 and adapter

Canoncan59 — Sun, 01 Nov 2020 16:25:54 GMT

The pictures are pretty telling. I hope that’s not the case. I just ordered one and have a 5D mk iv and iii. Did you try a micro adjustment with the adaptor using a lens align tool?

Re: loss of sharpness 100-400 using R5 and adapter

MikeSowsun — Sun, 01 Nov 2020 17:58:17 GMT

It is impossible to do Autofocus microadjustment (AFMA) with the R5 because it uses Contrast detection AF.

The R5 has an option for "Dual Pixel RAW" but I don't believe it is meant to correct for poor focus.

https://cam.start.canon/en/C003/manual/html/UG-03_Shooting-1_0040.html

Re: loss of sharpness 100-400 using R5 and adapter

kvbarkley — Sun, 01 Nov 2020 17:42:33 GMT

Are these RAWs or JPEGS? Do they have the same sharpening applied? This is also a 30 MP vs a 45 MP. Is the magnification the same?

Re: loss of sharpness 100-400 using R5 and adapter

Canoncan59 — Sun, 01 Nov 2020 18:08:45 GMT

Was not aware as mine has not arrived. Good to know, quick question then, i had to micro adjust my 500 f4L on both my 5DMk3 and 5dmk4, now i am worried about the R5

Re: loss of sharpness 100-400 using R5 and adapter

Waddizzle — Sun, 01 Nov 2020 18:13:23 GMT

I say it is Operator Error. Why haven't you posted the actual exposure settings? Why the color differences?

Your posted images would suggest that they were shot at 400mm, with an aperture of f5.0. That's not possible.

[EDIT]. I think you are seeing camera shake in the R5, BTW. Operator Error.

Re: loss of sharpness 100-400 using R5 and adapter

Waddizzle — Sun, 01 Nov 2020 18:14:54 GMT

@Canoncan59 wrote:
Was not aware as mine has not arrived. Good to know, quick question then, i had to micro adjust my 500 f4L on both my 5DMk3 and 5dmk4, now i am worried about the R5

This "test" appears to be fundamentally flawed. I would ignore it.

Re: loss of sharpness 100-400 using R5 and adapter

bobbieturner1 — Sun, 01 Nov 2020 19:06:10 GMT

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

Re: loss of sharpness 100-400 using R5 and adapter

bobbieturner1 — Sun, 01 Nov 2020 19:09:41 GMT

no post processing.

magnifications were the same

Re: loss of sharpness 100-400 using R5 and adapter

bobbieturner1 — Sun, 01 Nov 2020 19:10:40 GMT

Thank you

Re: loss of sharpness 100-400 using R5 and adapter

Waddizzle — Sun, 01 Nov 2020 19:42:20 GMT

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

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.

Re: loss of sharpness 100-400 using R5 and adapter

kvbarkley — Sun, 01 Nov 2020 19:48:00 GMT

Mirror lockup?

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

Re: loss of sharpness 100-400 using R5 and adapter

bobbieturner1 — Sun, 01 Nov 2020 19:54:26 GMT

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.

Re: loss of sharpness 100-400 using R5 and adapter

Waddizzle — Sun, 01 Nov 2020 19:54:48 GMT

@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.

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

Re: loss of sharpness 100-400 using R5 and adapter

bobbieturner1 — Sun, 01 Nov 2020 20:17:31 GMT

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

Re: loss of sharpness 100-400 using R5 and adapter

Waddizzle — Sun, 01 Nov 2020 20:40:15 GMT

@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.

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?

Re: loss of sharpness 100-400 using R5 and adapter

bobbieturner1 — Sun, 01 Nov 2020 20:48:42 GMT

Yikes. I meant R5

Re: loss of sharpness 100-400 using R5 and adapter

Windsun33 — Fri, 06 Nov 2020 17:55:08 GMT

Canon just put out a firmware update for that lens.

Re: loss of sharpness 100-400 using R5 and adapter

johninbigd — Sat, 06 Feb 2021 23:19:33 GMT

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.

Re: loss of sharpness 100-400 using R5 and adapter

jrhoffman75 — Sun, 07 Feb 2021 15:21:12 GMT

FWIW:

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