Format equivalence, engineering and practical envelope

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So which one has the biggest practical shooting envelope? They’re all the same; read on to find out why***.

Much has been written about depth of field, angle of view etc. equivalency for the various common sizes – I won’t repeat that. What I’m more interested is what consequences it has in practical terms on shooting envelope limitations, and how the apparent multitude of choices aren’t really choices at all – with a very few exceptions. To complicate things further, just because something can be done from an engineering standpoint doesn’t mean that it’s desirable from a marketing standpoint, and that’s before we even attempt to factor in how other things like haptics, controls, build quality etc. affect the overall shooting experience. Two examples: a consumer APS-C-sized camera with weather sealing and no feature or control compromises (think D5600 or 200D size); or a 1″ camera with really top class interchangeable optics (well, Nikon tried, but the market didn’t accept it). Or a rugged ‘professional’ compact, sensor size irrelevant. See what I mean?

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