All you'd really need to do is stump up some code that registers a boolean variable for each image, then send that result to the photographer in a useable format.
Ie.
IMG1 -- Print = yes
IMG2 -- Print = no
IMG3 -- Print = no
IMG4 -- Print = yes
IMG5 -- Print = yes
IMG6 -- Print = no
IMG7 -- Print = no
IMG8 -- Print = yes
IMG9 -- Print = no
This can be set using a PHP system similar to a traditional form: each field returns a value which is translated from a 1/0 to a yes/no in a table for the photographer OR as a list of 1/yes returns such as:
Images to be printed:
-----
IMG1
IMG4
IMG5
IMG8
From there the photographer can use whatever system he'd like to send the files off for printing.
Come to think of it, that's useful... *tinkers*
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