cropping

i would like to know why the heck can i not get a 5"x7" crop when i resize in the image size command...it either gives me 4.6"x7"...or 5"x7.5....it even happens in script>image process....then i resize to fit and i plug in the 5x7 in pixels.............its driving me nuts...........is it not possible?.......becasu​e i would like to make prints smaller but not lose anything in the photo.

Because you want to crop, not resize. What version of PS are you using?

PS CS2

One way to do it to select the rectangular marqee tool. Select Fixed Aspect Ratio from the Style drop menu. Enter 5 for Width and 7 for Height for portrait or vece versa for landscap. Now click and drag a box over the image defining the area you want printed. Then Select Image>Crop. Now save and print away. There is no way to preserve all of the image when changing the aspect ratio for printing without distorting the image. SLRs capture in 2:3, same as 35mm film. If you want to print a 5x7, 8x10, etc., you'll have to crop. If you have CS2, there is a crop tool that works the same, but is simpler. It combines some of the functionality of Transform selection with the Rect. marqee tool. You may find that tool easier to work with.