So there you have an example of that lack of sharpness I am facing with the R5

Karl_Guttag wrote:

First, it is hard to tell exactly what is happening with a small image crop. Secondly, the EXIF data suggests that either they were taken with the same camera or when editing, you layered the R5 image on top of the 5D file and "picked up" the other camera's EXIF. In cases like this, it would be helpful if you would upload a 100% image without crop. If you only shoot RAW/cRAW, then convert it to JPEG and upload it. Third, many things can go wrong with any single hand-held photograph. Two or 3 pictures show a trend.

Like some others, my first reaction was that the problem was motion blur. Motion blur could be caused by the subject, something wrong with the IS/IBIS, camera movement, and camera movement fighting the IS.

But on closer inspection, it does look like the focus is the primary problem (there may also be motion blur, but hard to tell). Also, assuming the two crops cover the same area, the "magnification" was very roughly 2x as much, which has about a square law effect on depth of focus (2x the magnification reduces the depth of focus by about 4x).

What jumped out to me (figuratively and literally) is the lower left white hair I have circled in red and, to a lesser degree, the upper right black hair circled. That one white hair appears to be sharp AND it appears to be coming out to the camera. The hairs that are further back seem more blurred than the hairs that are closer. The plant being fed appears in-between blurry.

Note the red circled white hair

Jordi Seyte wrote:

This is a photo taken with the old 5DSR at 1/400 f7.1 with the EF 100-400 USM II

Then here's a photo taken with the R5 with the same exposition, so 1/400 f7.1 with the same EF 100-400 USM II lens.

That same story is what I am getting when photographing birds in flight. I used to get razor sharp images with the 5DSR while I am getting disappointing shots with the R5.

The problem can not be the high pixel count, since the 5DSR is a 50 megapixel dynosaur with a mere 4 fps burst at higuest speed if I recall.

I'll keep investigating and experimenting.

I understand what you mean.

The photo seen on the camera screen looks ok. Seen on photoshop at 25% size, also looks acceptable, but when inspected up close, to me it is not what I would have expected.

Here is the original image, as you suggested I only opened the Raw file and saved it as jpeg.