In order to get the proper size for the challenges, this is what I do:
Load the photo into Photoshop and save as a .tif with a resolution of 200. Then I size it to 4x6" and save it. Then I do the editing I want to do, save it again. This copy I keep in a separate file -- I make notecards, and I normally use this size for prints, and the high resolution is necessary for that. (If I upload it to order prints, I will make a .jpg of the file.)
Then I size the longest edge as 640 and save it as a .jpg and look at the total number of bytes of the photo in CompuPic.
The photo is always too big at this point. I will lower the Image Quality under "save as" to 8, but no lower. Then I will lower the resolution of the photo as far as I need to in order to get the 150k. I usually end up with a resolution of at least 100 doing this and I can get within the boundaries of the rules.
I heard once that a resolution of 72 is all you need for a photo to view nicely on a monitor -- at least I think I heard that once.
Am I doing too much work here after I make my 4x6 .tif? Should I simply change the resolution to 72, make the longest edge 640, set the Image Quality to high and leave it at that?
Thanks.
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