Pixel dimensions from exported TIFF differs from JPG

  • 1
  • Problem
  • Updated 3 months ago
I have a NEF in Lightroom Classic CC. Export it as 100% TIFF, and one 100% size JPEG, most of the time the pixel dimensions differs by 1 pixel. 

In my workflow it is annoying because another party makes clipping paths using the JPG, while I use the TIFF for final editing.

This bug in Lightroom exists for a year now or so. 
Photo of Rob F

Rob F

  • 6 Posts
  • 1 Reply Like
  • frustraded

Posted 3 months ago

  • 1
Photo of Just Shot Me

Just Shot Me

  • 227 Posts
  • 59 Reply Likes
Pixels are pixels. If your camera takes images at 6000 x 4000 pixels that is what they stay no matter what file type you export them as. That is unless you crop the image.
Not sure what you mean by Size 100%. There is no Size 100%, none that I am aware of. There is Quality 100% which has nothing to do with the actual pixels in an image. That is for JPGs and reduces the File size of the exported image.
When exporting as a TIFF file there is no option for Quality. Only Compression and Bit Depth.
Just below the "File Settings" section of the export dialog there is an "Image Size" section and there is a % Option (I've never seen that before) is that what you are talking about? If it is I suggest you Uncheck that option if you want the exported image to be the exact size of what your camera sensor size is.
No reason to use the Image Size section if you are exporting at 100%.
Photo of Robert Somrak

Robert Somrak, Champion

  • 174 Posts
  • 44 Reply Likes
I haven't ever checked if the exported pixel dimensions are the same as the crop when Resize to Fit is unchecked for Tiff and Jpg.  As a test, I did a dozen or so different crops and they were always the dimensions of the original photos cropped dimensions.  This is Lr 7.4 and osx 10.13.6.   I have never worried about a couple pixels in the poor design of the crop aspect ratio rounding  (different glitch than this although Adobe could fix it easily} but in your case I can see where one pixel will create problems and this should be considered a bug. 
(Edited)
Photo of Rob F

Rob F

  • 6 Posts
  • 1 Reply Like
Thanks for acknowledging! So its in the crop aspect ratio rounding? Hopefully Adobe will fix this glitch in the near future.
Photo of Robert Somrak

Robert Somrak, Champion

  • 174 Posts
  • 44 Reply Likes
I just mentioned the crop aspect ratio rounding issue as another long term pixel dimension glitch.and it may or not be associated with this issue.  Are you on Windows or Mac?  I can't seem to duplicate the bug on osx 10.13.6.
Photo of Robert Somrak

Robert Somrak, Champion

  • 174 Posts
  • 44 Reply Likes
I should have said I was using Lr 7.5 instead of 7.4 in my previous post!!!!
Photo of Rob F

Rob F

  • 6 Posts
  • 1 Reply Like
I am on mac 10.13.6 with LR 7.5.. also with previous LR i had the same issues.
Photo of John R. Ellis

John R. Ellis, Champion

  • 3857 Posts
  • 1014 Reply Likes
Can you post a screenshot of the Export window with all the settings you've used?  That will help others reproduced the problem.  (If the problem can't be reproduced, then Adobe won't pay attention.)
Photo of John R. Ellis

John R. Ellis, Champion

  • 3857 Posts
  • 1014 Reply Likes
Also, upload a sample NEF to Dropbox or similar and post the sharing link here.
Photo of Chinoy Gupta

Chinoy Gupta, Employee

  • 50 Posts
  • 19 Reply Likes
Hi Rob,

I am not able to reproduce this issue. Are you applying any export preset or using some specific settings during export? Also if possible, can you share the image on which you are facing this issue?

Thanks,
Chinoy