Comparison 50MP HHHR vs Photoshop Super Resolution

Photoshop ACR now allows to increase the resolution by a factor
of 4. You open a 20MP RAW file and get an 80 MP image.

I've compared it to the 50 MP handheld hires mode of the Olympus
E-M1 III (the camera takes sixteen 20MP images and merges them
in-camera into a 50MP image; no tripod is needed).

I took this image in 50 MP handheld hires mode, getting two RAW
files (a 50MP and a 20 MP one).
Here is the original image, resized to 1024x768:
https://myolympus.org/images/comp_hi.../P8220381_.jpg

Here is a comparison of two crops of the 50MP (handheld hires,
left side) and the 80MP (Photoshop Super Res, right side).

First crop (top part, the clock):
https://myolympus.org/images/comp_hires_acr/detail0.jpg

Second crop (bottom part, station entrance):
https://myolympus.org/images/comp_hires_acr/detail1.jpg

You can see that the 50MP handheld hires has real detail, while
the 80MP Photoshop Super Res has a lot of fake detail and noise.

For instance the net left and right of the clock and the brick
work in the first crop are rendered much better in the 50MP HHHR
image.
In the second crop the small text in the red boards is readable
in the 50MP image, while it's not in the 80MP image.

However there are moving people in the image, which result in
ghosting in the 50MP HHHR image. One option would be to upres
the 20MP image with Photoshop Super Res to 50MP and then mask
away these image areas with ghosting.

--
Alfred Molon

Olympus 4/3 and micro 4/3 cameras forum at
https://groups.io/g/myolympus
https://myolympus.org/ photo sharing site