24 bit tif file opens as 8 bit

Forum|Forum|2 years ago
July 19, 2023
3 replies
816 views

How can i make Photoshop open 24 bit tif files as 16 bit images? I've checked the CameraRAW settings and it is set to 16 bit?

I'm opening a series of tif files in a stack just for context but it happens even whenb i open them individually.

Troubleshooting

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D Fosse

Community Expert

24 bits = 8 bits x 3.

Just different notation, total or per channel.

C

Christopher31172763koc5Author

Participant

I'm not sure i understand correctly?

Photoshop used to show the images as 16 bit (The images are renders) and when using some of the blend modes they behaved in a way that worked. Now they behave like 8 bit images, especially on colourdodge, so i really don't thik Photoshop is seeing them as 16 bit?

PECourtejoie

Community Expert

Hi!
Yes, to get a 16 bit per channel TIFF file, it would be called a 48bit TIFF per your terminology. https://helpx.adobe.com/uk/photoshop/using/bit-depth.html

What do you mean about Color Dodge, the result of the blending mode should be the same.

The only difference might be, when you look at it at lower magnifications, the image pyramid of 16bits was sometimes converted to 8 bits, prior to the August 2022 version: https://helpx.adobe.com/uk/photoshop/using/whats-new/2022-4.html
The rule of thumb: only compare images at 100% magnification.