This can often result in duplicate photos being stored on your hard drive.

However, what happens more often than not, in our haste to get out the door with our busy schedules, we end up just dumping the contents of an SD card onto our hard drive, leaving a mess of sorts to wade through later. That's a whole separate topic from what we're going to be talking about here.) Compare that to the $0.29 cost you can often find at a photo finisher. It's far cheaper, too, since inkjet prints done at home can easily cost you more than $1 each, after you take into consideration the cost of the special photo paper and the extremely high cost of inkjet printer inks. Rather, you will get far superior quality by taking your digital prints to a photo finisher and having REAL photos printed out. (For what it's worth, I do not advocate printing them out at home on an inkjet printer. Now, we can edit through all of those vacation pictures and birthday pictures and graduation pictures, and only print out the 'good ones.' Long gone is the cost associated with having to develop and print five or eight or 12 rolls of 36 exposure 35mm rolls of film after a vacation. Many people tend to shoot away, and edit later on the screens of their computers. Pocket cameras, cell phone cameras, digital SLRs, and a whole host of other tools now put thousands and thousands of digital photos directly at our fingertips. Thanks to the explosion of digital photography, it has caused us to take many pictures that we might otherwise have not shot when using film, due to the cost associated with having the film developed and printed into physical prints. Many of those photos have been downloaded to my computer's hard drive. If you're anything like me, you take and have thousands of photos.

Exiftool command line function