Known Participant

Question

Photoshop saves tif-files bigger as usual with same settings

Forum|Forum|3 years ago
December 28, 2022
20 replies
2017 views

Dear community,

following issue occurs: until the latest version of PS I saved very big 16-bit-tif-files with the following settings:
compression: none,
image pyramid: unchecked,
Interleaved, Macintosh, RLE

They never exceeded 4 gb so that I could save them as tif-files (they were about 2 - 3 gb).

Since the update to version 24.1 (PS 2023) I get the warning that the file could not be saved as it exceeds the 4gb limit of tif-images though I used exactly the same settings for saving the files

I tried to save older pictures I was editing and saving with the older version of photoshop and suddenly they got bigger too when saving them with the new version.

Has anybody an idea how this can occur?

Best wishes,
André

macOS

A

AMANITO

Participant

I have the same problem as I work on PS22 a lot of large tiff 16bit uncompressed files and all the newer versions of PS are save a lot bigger file size with the same settings 😞

I have tried Photoshop 26.2 the latest and the problem is the same!

D Fosse

Community Expert

@AMANITO

Give us an example. Save the same 16 bit uncompressed file in the two versions, and show us the file sizes in Windows Explorer/Finder.

We also need to see the pixel dimensions. Layers blow up the size quickly and unpredictably, so use a flat file to eliminate that variable.

A

AMANITO

Participant

the files with 25 means PS 2025

no layeres is flat

so the problem is when there is layers

the files size and everthigh elese is the same, just save as in PS 2025 with the save settings

D Fosse

Community Expert

Right. Thanks for providing full info, it's hard to guess when we don't have any information.

That should, on the face of it, narrow it down to layer compression. These are the options you get for that:

This is actually one thing I dislike about TIFF. I don't want any compression whatsoever, but with TIFF you can't avoid it. There should be a "none" option there.

But note that - as explained above - there was a confirmed bug in earlier versions that applied compression even when compression was turned off. That was PSD and PSB, where you set compression in Preferences, not in a save options dialog. That bug has been fixed, and there is no compression now. But what if the same applied to TIFF - I still haven't seen TIFF mentioned in any of those discussions and bug reports. I simply have no idea. And how is that layer compression actually implemented? Could there be additional bugs here that we don't know about?

A

André Mardari-BraunAuthor

Known Participant

Ok, let me explain better.

I have a basic scan (raw-scan), a .tiff-file generated by my scanner, in 16-bit, uncompressed, bw. All of these raw-scans have the same size as they have the same dimensions and they are all in 16 bit (due to the maths of an uncompressed .tiff-file they HAVE to have the same size, and they do).

First scenerio: I open the file mentioned in PS22 (ver. 23.0) and refer the Dot Gain 15% greyscale-colorspace (as it is a bw-scan). Then I copy the background layer (for editing of any kind) and add 3 correction layers (e.g. gradation curve). Afterswards I save the file as .tiff (I save it as a seperate file, no overwriting, so I can use exactly the same raw-file to test the process in the newer ps-version) with the following settings: image compression none, picture pyramid unchecked, interleaved, macintosh, RLE.
The file has a size of 406.3 mb.

Now I redo exactly the same process with the newer ps-version PS23 (vers. 24.2), opening the untouched .tiff-image right out of the scanner and applying all these changes. I also save the file with exactly the same settings.
The file has a size of 927.4 mb.

The issue has to be with the layer compression. If I save the files with just one layer they have the same size. By adding additional layers the size of the file saved with the newer version of PS gets much bigger.

I hope I could explain the issue more precisely with this.

Anybody an idea how to fix this?

Best wishes
André

Stephen Marsh

Community Expert

Or perhaps a colour conversion with dither applied, however, there has been no mention of colour conversions, just resaving an old file in a new version with no other presumed changes.

D Fosse

Community Expert

Twice as big has 16 vs 8 bit written all over it... 🙂

A

André Mardari-BraunAuthor

Known Participant

Hi folks,

the issue still occurs, with every new ps update I hope that it will be fixed but nothing.

Really nobody has an idea how to fix this?
This time a random .tif-file got almost twice as big by saving it with ps 2023 (ver. 24.2.) ...

Help please!

Best wishes
André

A

André Mardari-BraunAuthor

Known Participant

I just put back the old setting files and the file size is now the same again as with cleared settings. So unfortunately this didn't help anything. Still the same files saved with the newer version of photoshop are bigger than when I save them with the older version, regardless the state of the preferences files (whether they are cleared or not).

A

André Mardari-BraunAuthor

Known Participant

Thank you and sorry, I just saw, that @J453 already put the link for the instructions.
I just tried it out and unfortunately the file is still bigger than the same file saved with the older photoshop version but, and this is really strange, a little smaller than before removing the settings. I just don't get it anymore ...