![]() ![]() ![]() Other methods introduce some form of “fuzziness” as these resemble more or less the way you would yourself compare photos. Duplicates only will find exact duplicates on a byte-per-byte basis. After cataloguing, you can first decide which algorithm you want to use. The cataloguing process went smoothly and didn’t take too much time. You can save that catalogue and come back to it later if you wish, which is great because the app will intelligently compare your images, but in the end you’ll need to decide whether you want to trash images or not - you have the last word. The program first creates a catalogue of all your images, internally creating small size bitmaps for later processing (you don’t get to see those they serve only as representations of your images for easy comparison). I had a collection of over 6,500 images to compare, and to see how PhotoSweeper behaved when it has to go through that many possible lookalikes, I processed them all at once. This means PhotoSweeper would compare JPEGs to JPEGs and RAW images to RAW. That proved to be as easy as advertised: there’s a Preference setting that allows you to compare only within the same image format. While testing PhotoSweeper with this setup, I was particularly interested in how it would treat these RAW/JPEG pairs. ![]() When I offload a memory card, I ingest the RAW and JPEG image pairs to a folder and add pre-defined metadata using Photo Mechanic. I use the Photo Mechanic image browser ( reviewed here), which keeps your images in the folders you define. If you don’t use Lightroom or Aperture, you can just open folders or drag and drop images to PhotoSweeper. Working with PhotoSweeper can be incredibly simple: using the app, open your Aperture or Lightroom library and have it search for duplicates, or near-duplicates based on time interval or by comparing histograms or visual correspondence (pixels are alike). PhotoSweeper assists you when cleaning out your image database. How do you get rid of those duplicates and near-duplicates? Doing it manually is one possible cure, but it’s a lot better for your nerves if you do it with the help of an app. This advantage is also a disadvantage: you risk stuffing your disk with useless images you’ll probably never going to use. One of the advantages of digital photography is that you can shoot as many photos of the same subject as you like without worrying too much about composition or, in the case of action photography, of whether your subject was in focus all the time. ![]()
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