Sheila Finch Posted March 18, 2019 Share Posted March 18, 2019 I just started using Affinity Photo, and I noticed that my painting panorama tiff files are half the size of the same Photoshop tiff files. I think Photoshop is saving as 32 bit and Affinity is saving as 16 bit. (Would this even matter for print publishing?) I always submit to my publisher 300 dpi "at size" of the original painting. If it is important, is there a way to save as 32 bit? Thanks so much for any help I can get on this issue! Quote Link to comment Share on other sites More sharing options...
walt.farrell Posted March 18, 2019 Share Posted March 18, 2019 Welcome to the Serif Affinity forum! Unless you started with a 32-bit image I doubt that exporting it as 32-bit would have any advantage. But if you want to try, File > Export, select TIFF, click on More..., and choose Pixel Format RGB 32-bit (HDR). Another possibility to explain the file size difference: Affinity always uses a lossless compression method when saving TIFF files. Perhaps you have PS saving them uncompressed? Quote -- Walt Designer, Photo, and Publisher V1 and V2 at latest retail and beta releases PC: Desktop: Windows 11 Pro 23H2, 64GB memory, AMD Ryzen 9 5900 12-Core @ 3.00 GHz, NVIDIA GeForce RTX 3090 Laptop: Windows 11 Pro 23H2, 32GB memory, Intel Core i7-10750H @ 2.60GHz, Intel UHD Graphics Comet Lake GT2 and NVIDIA GeForce RTX 3070 Laptop GPU. Laptop 2: Windows 11 Pro 24H2, 16GB memory, Snapdragon(R) X Elite - X1E80100 - Qualcomm(R) Oryon(TM) 12 Core CPU 4.01 GHz, Qualcomm(R) Adreno(TM) X1-85 GPU iPad: iPad Pro M1, 12.9": iPadOS 17.7, Apple Pencil 2, Magic Keyboard Mac: 2023 M2 MacBook Air 15", 16GB memory, macOS Sonoma 14.7 Link to comment Share on other sites More sharing options...
Sheila Finch Posted March 19, 2019 Author Share Posted March 19, 2019 Thank you for your help! Yes, I do save Photoshop images uncompressed as I was under the impression this is the best way to save my images, but perhaps I've been misinformed. Quote Link to comment Share on other sites More sharing options...
walt.farrell Posted March 19, 2019 Share Posted March 19, 2019 Some forms of compression (for example, the one used for JPEG files) loses information. The one typically used for TIFF files does not lose any information and is therefore safe. However, some applications don't support compressed TIFF files, or only support certain forms of compression. Quote -- Walt Designer, Photo, and Publisher V1 and V2 at latest retail and beta releases PC: Desktop: Windows 11 Pro 23H2, 64GB memory, AMD Ryzen 9 5900 12-Core @ 3.00 GHz, NVIDIA GeForce RTX 3090 Laptop: Windows 11 Pro 23H2, 32GB memory, Intel Core i7-10750H @ 2.60GHz, Intel UHD Graphics Comet Lake GT2 and NVIDIA GeForce RTX 3070 Laptop GPU. Laptop 2: Windows 11 Pro 24H2, 16GB memory, Snapdragon(R) X Elite - X1E80100 - Qualcomm(R) Oryon(TM) 12 Core CPU 4.01 GHz, Qualcomm(R) Adreno(TM) X1-85 GPU iPad: iPad Pro M1, 12.9": iPadOS 17.7, Apple Pencil 2, Magic Keyboard Mac: 2023 M2 MacBook Air 15", 16GB memory, macOS Sonoma 14.7 Link to comment Share on other sites More sharing options...
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