Importing of Photoshop Tiff files

[Mick63]

Hi everybody

I have probably a rather unusual question. I have some rather big Tiff files (around 1.2GB) I have previously worked on in Photoshop

and which have been reworked in Affinity Photo 2. I haven't deleted any layer or changed any size but the file size seems to be almost half

now, around 560MB. Does this have to do with Affinity algorithms or is something else going on?

[Michail]

1 hour ago, Mick63 said:

I have probably a rather unusual question. I have some rather big Tiff files (around 1.2GB) I have previously worked on in Photoshop and which have been reworked in Affinity Photo 2. I haven't deleted any layer or changed any size but the file size seems to be almost half now, around 560MB. Does this have to do with Affinity algorithms or is something else going on?

That is unusual from my point of view. Most of the time, afphoto file is larger. This is because afphoto files is not a normal image format, but a project format.
Can you still say what you did to the file in Affinity Photo? Did you change the size of the image. Did you crop or trim?

[David in Яuislip]

If you're comparing Photoshop tiffs with Affinity tiffs I'd guess that the former were saved without compression whereas the latter were saved with the default zip compression

exiftool -compression -filesize *.tiff
might help

[Mick63]

I didn't change anything size wise I added a layer and when I did cmd+s it asked if I wanted to save it with layers (so no afp format)

Probably as David suggested it might save tiff files with default zip compression.

 

[walt.farrell]

1 hour ago, Mick63 said:

I didn't change anything size wise I added a layer and when I did cmd+s it asked if I wanted to save it with layers (so no afp format)

It probably did save as a .afphoto file. I think that right now in V2 that's the only possibility when you Open a TIFF, edit, and then do a Save. I think there's a bug report for that. But in general I think you need to Export if you want a TIFF with Layers.

[Mick63]

I thought so too, but it saves it as tiff, kind of writing over the Photoshop tiff file. Anyway it was only curiosity because it doesn't affect

the actual file or quality of the file.