Because Amazon is one of the world’s largest marketplaces for digital camera gear, checking out the best sellers in photo related categories provides a sense of what’s popular—and maybe even a few surprises.

There are numerous reasons for removing unwanted objects from a photo, including the proverbial telephone pole emanating from a person’s head. In other instances the goal may be eliminate an object that either crowds the image or is too close to one edge of the frame.

Let’s say you’ve shot a cool outdoor image where just about everything in the photo looks good. Sharp and interesting subject? Check. Leading lines in the foreground? Check. Decent lighting? Check. Interesting looking sky?

We all love our dogs, and even if you don’t own one of these loyal companions yourself, you undoubtedly have friends and family who do. And unlike cats (who always think they’re in charge), most dogs are eager to please and take direction willingly.