First, if there's a tutorial for using Duplicate Finder I'd gladly read through it, if someone could direct me. Especially regarding the use of the wildcard character (*) in the search criteria. I'd greatly appreciate the direction.
Next, here is what I'd like to do. By way of example, say I have 100 photos in a folder on Drive C - let's call this folder "Able" because sometimes this "source" folder may be on a different drive. I want to search for duplicates and similarly-named files among 500,000 photos on Drive K. Often one photo will have several similar filenames. Examples: IMG_1234-