Private photo tool
Which focal lengths do you really use?
Drop a folder's worth of photos. The page reads each one's focal length, shows where your shots cluster and which lenses for your camera cover that range. Nothing is uploaded.
Read on this device. Nothing is uploaded, stored or measured about your photos.
Questions
Why would I want this?
Before buying a lens: if most of your photos sit between 24 and 50 mm equivalent, a bright prime or a short zoom in that range will be used; a long telephoto may not.
How many photos can it read?
Up to 2,000 at a time; it reads only the start of each file, where the details are.