If you happen to use digiKam for managing photos scanned from negatives, you’ll appreciate the application’s capabilities to add and edit EXIF metadata. Using digiKam’s dedicated interface for managing metadata, you can add key EXIF values, such as maker, device model, aperture, shutter speed, ISO, focal length, etc., to the scanned photos (provided you have these data handy).
However, digiKam doesn’t allow you to apply the same EXIF data to multiple photos in a single operation. Adding the same maker, device, ISO, and focal length to a set of photos one-by-one can be a bit of a nuisance, but you can use a simple trick to work around this limitation. Start with adding EXIF values to a single photo. Select then the rest of the photos, choose Image → Metadata → Import EXIF, pick the processed photo, and press OK. This will apply EXIF data from the processed photo to the selected images.