Image quality difference between light room and photshop

[ross6C2B]

Hi, 

Has anyone else experienced their picture un edited being sharper in PS than it is in LRC?

LR - Left  / PS- Right

Cheers 

Ross

[Just Shoot Me]

Develop module in LrC or Library?

If develop have to gone to 100% zoom and then back again?

[ross6C2B]

This was in the develop module. Zoomed in to 100% in both PS and LRC

[Per Berntsen]

At what magnification are you viewing the image?

To make a valid comparison, you have to view the image at 100% in both Lightroom and Photoshop.

This is especially important when evaluating sharpness and noise.

Any other view will be inaccurate and misleading because the image has been scaled.

[ross6C2B]

This was zoomed ton100%in both LRC and PS on the same screen for comparison 

[Per Berntsen]

The PS image has slightly higher contrast (brighter highlights), and it's a little hard to tell if it really is sharper, or if it's the higher contrast that makes it appear sharper.

If you turn off the GPU in LR or PS, or both, do you still see a difference?

LR: Edit > Preferences > Performance > Use Graphics Processor > Off

PS: Edit > Preferences > Performance > uncheck Use Graphics Processor

[Todd Shaner]

What file type (raw or JPEG/TIFF)? How are you opening the file in PS (PS File Open, LrC Edit in PS, or LrC Export File opened in PS)?

[ross6C2B]

Importing the raw file from camera then exporting to PS through LR. An Adobe agent advised it was an issue with LR not being able to manage 16 but files. 

[Per Berntsen]

Did you use Export or Edit in Photoshop?

Did you try to disable the GPU?

Lightroom (or Photoshop for that matter) has no problems with 16-bit files, so what the agent told you is not true.

[ross6C2B]

Edit in PS, sorry not sure what GPU is. 

[Per Berntsen]

The GPU is the Graphics Processing Unit. It speeds up image editing and processing.

I gave you instructions above on how to turn it off.

First try to disable it in Photoshop, then compare the images.

If it makes no difference, try to disable it in Lightroom, and compare again.

If disabling the GPU in PS or LR gives you an identical display, updating your graphics driver might fix the issue.

[D Fosse]

This can't possibly be 100%.

I tried to stack them in Photoshop to quickly compare - but it's not possible to align them precisely. They are offset about half a pixel both ways. So there has to be resampling somewhere. That cannot happen with a true 100% screenshot.

[Todd Shaner]

I see the same 1/2 pixel size difference when trying to align the screenshots inside PS. I suggest resetting the LrC Prferences as outlined at the below link. Rename the Preferences file (.OLD rather than deleting or moving it so you can easily restore it if on no help.

EDIT: Make sure you restart LrC after renaming the Prefernces file.

https://www.lightroomqueen.com/how-do-i-reset-lightrooms-preferences/