I created an action to prepare an image for printing. It includes a step to flatten the image. My Photoshop file starts as an 8 bit image. If I manually run the action the result is also 8 bit.
However, if I batch run the action in Photoshop (File >Automate) all the images end up as 16 bit!!
What's happening?? And how do I get Photoshop to stop converting 8 bit to 16 bit? I've also noticed that when I open an 8 bit file, Photoshop converts it to 16 bit.
One more question: is changing the bit depth lossless? I know the color differences between 8 bit and 16 bit images. But if Photoshop is going from the original 8 bit to 16 bit, and then I convert it back to 8 bit, will the image quality degrade from the original 8 bit image?
Hi, can you check if you did forget configuring an 8>16 action in the Scripts Events Manager.. of the File>Automate menu?
The 16>8 bit jump usually adds a bit of dithering, in order to smooth gradients created in 16bits, to avoid stairstepping.
Can you post a screenshot of where that is?
Here's the dialogue box for Batch Action in my Photoshop. I don't see what you're referring to.
I just noticed that it's also changing an 8 bit PSD to a 16 bit TIFF if I just manually run the action!!
I've been having problems lately with 8 bit images opening as 16 bit and I don't know why.
Even if I don't use an action and do the file manually, flattening the 8 bit PSD, enlarging the canvas to give it a white border and then saving it as a TIFF, after I do that, and without closing the file, it shows it's an 8 bit TIFF. But when I close and reopen it, it's suddenly a 16 bit TIFF! As I said, this has been happening for the last couple weeks. I changed my MacOS from Big Sur to Monterey, but that's the only change I've made. I noticed it with Photoshop 2022 and Photoshop 2023.
I think it's saving it as an 8 bit, but when I open the TIFF it's opening in Camera Raw and that is converting it to 16 bit.
IS THERE ANY WAY TO OPEN A TIFF DIRECTLY WITHOUT OPENING IT THROUGH CAMERA RAW?
Here is visual what should be done because this step can not be skipped when opening .raw files.
Thank you, Bojan!
When you open in Camera Raw things beconme 16 bit. So don't open in Camera raw. Open the normal way (with Open from the File menu).
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Okay, this problem has been solved. Apparently, opening my 8 bit tiff files automatically into Camera Raw when I open them in Photoshop was converting them to 16 bit. I had a great Adobe rep who showed me how to turn off the preference that makes a tiff open in Camera Raw. And it's all working fine now.
I had a great Adobe rep who showed me how to turn off the preference that makes a tiff open in Camera Raw.
You didn't need an Adobe rep for that, I showed you how in a screenshot above.
Yes, thanks. At the time, I was under a big deadline and I didn't understand the image you provided. So, I need help right away. As it turns out, the images were 8 bit. Only when I opened them to check did they become 16 bit.
Anyway, I do appreciate all the help all of you provided.