Reefbone wrote in post #4138224
Everyone (correctly) rips on the print button. I'm sure it's just Canons way of enticing Canon owners into buying their printer. After all, they are 'compatible' right? We also all know that they probably make more money on the ink cartridges than the printers. So why not just ditch the button on the SLR's and give a sizable printer rebate/coupon when you buy a Camera? Then they still get the ink sales and respect for ditching the button ?

Whatcha think

I've had somewhat the same response (I don't need the print button, so why is it taking up real estate?), but then, looking at it another way, I could ask "when would this print function actually be valuable?"
I can think of a few settings in which a camera and a small portable printer could fill a real purpose. Think a wedding, an event, a kids' soccer game, a family gathering, or any situation where you are taking pictures where you don't have the convenience of using a laptop but would be around people and taking pictures of people or, say, in a scene involving other people who may have a desire to see and have a 4x6 of their own.
So, you have a small battery operated printer that could sit on the kitchen sink or a coffee table or whatever, and you can plug the camera into the printer and use the camera's big, nice LCD to pick and print what you want.
I didn't work for Canon, but did work for HP's printer division, and that was a niche that these little portables was meant to fill, and Canon's PictBridge is a valid approach to that.
So, we don't use the button ourselves, but they still have some purpose. Maybe if we could have a Custom Function to define another use for it, or they could make it a double-duty button like a lot of others are.
Tony
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Several Canon cameras, too many lenses and stuff to list 
Tony Long Photos on PBase