I am wondering if anyone knows of an online image focus detector programme that will detect that the image is in focus without having to painstakingly go through and printing all images. I have uploaded some images to sell on a shop site but I am worried that some maybe out of focus when customers print them out after enlarging. Some of my images were scanned but they have been mixed up with others that were photographed, so need to check they are sharp and in focus. I have used FastRaw Viewer that detects edges that are sharp, but does anyone know of another way? Thanks in advance!