1 person found this helpful
We cannot know. You need to tell us what exactly you are saving to what format using what version of PS on what system. From the sound of it, you are simply saving to a format that doesn't support DPI metadata and PS simply uses the default 72dpi.
I'm using Photoshop CS6 on a Windows 7 - 64 bit system. I'm using the Image Size dialog box and saving the file as a 4X6 at 300 dpi from a psd file to a jpeg file. When I open the file it is 5X7.5 inches at 240 dpi. I've been playing with it and have just figured out that when I save the file as a psd file it stays the size I've created and it changes when I save as a jpeg file. This is change is recent. It's worked properly in the past. Thanks for your help.
Is the jpeg opening first in ACR? If so, it's resetting the dimensions based on the settings in ACR.
The file size is not changing with respect to the pixel dimensions.
So the file size is not changing its still 1200px by 1800px but something changed te resolution from 300 to 240 dpi. The previous append suggested ACR may be doing that if you defaulted that image or jpeg images be open using ACR. If this is not the case do you have any script event manager events set up the may do something like change a images resolution without resampling the image. Like an open event?
I have Photoshop set to open jpegs in ACR. ACR's default setting was set at 240 dpi. I changed it to 300 dpi and now all is well. Thanks for the help.