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Old Oct 9, 2005, 5:40 PM   #1
Senior Member
Join Date: Jun 2002
Posts: 274

I recently purchased the Nikon D50 and am very new to Photoshop. The ither day I downloaded a JPEG fro my D50 and did some post-processing in Photoshop CS. I noticed that when I use "SAVE AS", I can save to a JPEG format but if I use "SAVE", I cannot choose JPEG but there is a PSD format. I also noticed that the JPEG is 856KB but the PSD is 81,879KB. What is the PSD format used for?

Also, when I use "SAVE AS" and save it to JPEG, I get the following options:

Image Options -> Quality -> 10 Maximum
Format Options -> Progressive -> Scans -> 3
Size -> 56.6kps

What do these numbers / options mean?

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