Ask the the paper to be trimmed to the aspect ratio of your images. This may cost more and not an option everywhere but it gives the cleanest results. So if you print a 4:3 image you will end up with a 4" x 5 1/3" print instead of a 4x6.
Ask the the paper to be trimmed to the aspect ratio of your images. This may cost more and not an option everywhere but it gives the cleanest results. So if you print a 4:3 image you will end up with a 4" x 5 1/3" print instead of a 4x6.