A 3MB (on disk) jpg image was produced by a camera from a 30MB TIF uncompressed file. In Pshop, when Image Resizing, the pixel dimension displayed is 30MB for that 3MB file.
I was hoping to upsize the jpg to 34MB by changing the image size and monitoring the pixel dimensions, but that doesn't work.
Explanations/suggestions/comments appreciated.
Michael
#1
Michael,
The 'pixel dimensions' file size shown in Photoshop's Image Size dialog is a no-compression reading.
Because the JPEG format can be written with varying degrees of compression, the Image Size reading and the size of a saved JPEG are not necessarily directly related.
#2
When the file is opened by Photoshop, what you see is no longer a JPEG, it is a virtual PSD file.
The file size shown reflects the actual image size, without compression factored in.
#3
#4