Folder vs. Folder and Compare all is to reduce the number of comparisons in Find.Same.Images.OK, for example, if they know that original images must be in a folder.
Folder vs. Folder you have 20 images in the first folder and the folder with the original images has 20 thousand images. Is the maximum of the required comparisons 20 x 20.000 = 400.000 Comparisons.
In the option Compare all Find.Same.Images.OK will compare all images together ergo:
20 Thousand (20K) images, maximum comparisons required:OK. That's too much math now, but in any case, it's a lot more when every photo has to be compared!
(20K x 20K)/2 - (20K/2) = 200 000 000 - 10 000 =200 Millions comparisons.
But the program is fast enough to master such tasks and to find similar or the same pictures ergo photos under Windows.
Please always use ... the latest version of Find.Same.Images.OK!
FAQ 2: Updated on: November 13th 2018 16:00