Wouldn't it be easier to just mask off your current camera's LCD display (with some tape) so when you frame a shot, you're sure "what I need in the crop is actually within those parameters of the pictures"?
Then it would just be a matter of running a batch process to crop the captured image (to match the LCD's tape guide) and resize (to the desired resolution). And there's a bunch of software that'll do this already.
Or maybe I'm misunderstanding something.
Looking for a camera or cellphone with a camera that has the capability to set dimensions before taking a picture. Does it exist?
As it is right now, I take pictures then pull up an editing program to crop them into specific width and height dimensions so they'll fit into into a website.
It'd be much easier to just take pictures initially with those dimensions set so I don't have to take multiple shots just in case what I need in the crop is actually within those parameters of the pictures.