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Many version control systems aimed more toward digital assets do some sort of locking, so only one user edits a file at a time. Advisory or mandatory, with support for breaking locks, etc.

git-lfs with appropriate file types set to use it.

LOL,sweet summer child, its all 0's and 1's

Please explain, in 0's and 1's how to combine the change to add a dark splotch over here and a patch of blue over there so that the image you get out of the merge has both the dark splotch and the patch of blue... without teaching git how to comprehend image file formats (and assuming you're not using a bitmap which is sort of a free win).