Initially when I prepared the photography images to be offered as frameable prints, I decided that I wanted to expose the entire image to view for the customer and thus created a quarter inch border of white around the edges of each picture. Since frames do overlap the image by a little, creating the white border would keep the frame from covering any of the actual image.
The problem is, most factory made frames are not precise in their measurements of the cutouts. So although a commonly available frame may be listed as fitting a 8” x 10” photo, for example, and the cutout may be a nominal 7.5” x 9.5” (meaning that 1/4 inch of frame overlap exists) the actual measurement of the cutout is never that precise. This results in a small sliver of white showing either on one side or more than one side of the image.
That is a little distracting and though many people may not notice or care, I think others will. I certainly do. So to correct that problem I changed the border on each edge of the image from 1/4 inch to 1/8 inch. Now it is possible that due to irregularities in various frame sizing a very tiny amount of the actual image may end up under the frame overlap, it will be so small as to be inconsequential. Better that than having the proverbial slip showing, if you know what I mean. 
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