I like the idea of Angle of View and Field of Vision as a way of understanding the result of putting a lens designed for a full frame camera on a crop frame camera. I've been struggling with this myself and have found that I cannot get the field of vision I want with a full frame telephoto lens on my Nikon 7200 DX camera with 24 megapixels. Looking at the crop factor which would give me a 450 mm view means nothing when the field of view is too small to capture the picture.
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This is my first entry to the Ugly Hedgehog Forum. I do this after a year or so of reading and learning from the posts. Without getting too deep into the comparison of photographer vs camera operator, it is this photo that draws me in. The picture is the work of a photographer who used light, composition and a planned setting, to convey a message in a finished photograph. At least I found a message in the picture. So here's my point, I can't separate being a photographer from being camera operator. If I press the shutter button on a camera I am the photographer and unless I take the initial exposure to a person who specializes in post processing to do the editing, I am also the camera operator.

Having said all that above, I would like to see a discussion on this Forum that considers this question--What level of post processing takes an image out of the realm of photography into another art form?