Ashish: A few questions:
What’s your screen’s resolution? Images scale to a 4:3 ratio; is there any chance you’re running a 16:9 resolution? It could account for the image discrepancy.
What’s the image resolution? This “stretches” the image to keep the best resolution, without distorting the image. If the screen is 1920x1200, and the image is 1920x1080, you’d see the blank section at the top and bottom, as the program would center the image for you, while maintaining the same aspect ratio.
As for the path, that’s something which needs to be edited for your own photo/image folder. Mine is the one listed, but you might want to use yours with a private folder, or have a slightly varied path (like the Public/Public Pictures you mentioned).
In the next version I offer, I’ll include options to allow easier folder selections, various resolution ratios, and the choice between “scaling and maintaining aspect ratio” vs “scaling to fill screen”.
Thank you kindly for the feedback. It’s appreciated. :)