TIFF file under 4 gigs will not save as tiff

Question

Photoshop version 26.6.1 Lightroom Classic version 14.3 on an iMac 15.4.1 with lots of system resources (system should not be the issue)

This has been an ongoing issue for the last few updates. When I am finished in photoshop and go to save back to Lightroom Classic or just save to harddrive I get the message that the file exceeds the tiff allowance of 4 gig?. The latest files in question are 1.49, 1.69 and 2.64 gig files, so they are well under the 4 gig allowance. They should save as tiffs shouldn't they?

davescm · Answer

'...They should save as tiffs shouldn't they?' It really depends on what you have done to those images.For example, all the following can increase the file size :- Adding layers- Adding smart objects- Increasing detail (e.g. sharpening)-  Increasing noise (which does not compress as well)-  Increasing bit depth (16 bit files take up twice the bytes per pixel as 8 bit)- Adding metadata.Conversely, file size saved to disk can be decreased using compression (Tiff offers various forms both lossless and lossy). Dave

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