|Quoting CalgaryBill (Reply 6):|
Once that is done, you can resize the picture with Image - Image Size. All you have to do is set the width you want (1024 as mentioned above is popular) and the height will automatically be filled in for you.
No maths required.
No maths required......nor any thought
There is an acceptable range between 3:2 and 4:3 and I see a lot of images at one end or the other of that range when the image would look much better at the opposite end of the range. Select any side-on images on the database and check their sizes and despite most of our subjects being inherrently long and thin and it will not take long to find some at 1024 x 768.
I use a freehand crop tool to level and crop (the whole crop can be rotated for levelling by going to the corner, clicking and moving the mouse). I compose the image to what looks best crop and resize (ctrl+Alt+I) simply making sure that the size is within the permissible range.
You end up with an image that is cropped, levelled and, importantly (though frequently ignored) composed all in one go.