Wow, this is a pretty heated debate.
The way I see it, and take this with a grain of salt as I am not a professional photographer, just an avid hobbiest... There are a couple reasons why people go full frame...
- They are old school, and shot 35mm film... They tried shooting with a crop sensor, but felt overly restricted (i.e. a 24mm lense does not give the same fov they were expecting and want).
- They read a lot of forums, want to buy the best they can within their budget (they have adequate funds to make the purchase), and from their "research" FF is the way to go without going to a true Professional Camera (ala 1D series).
- They are gadget lovers, always looking for "the next best thing" and tend to upgrade their bodies quite often... They probably started with a Rebel, then stepped up to a XXD, and are now looking at the next step which is a FF camera...
- The serious photograher... Probably been shooting with a XXXD, or XXD for awhile now... learned the limitations of his or her gear, found a definite need to step up to a full frame (i.e. improved image quality, shallower depth of field, high and low noise performance, true 35mm coverage, etc).
- The gear trouble shooter... someone who probably started with a p&s, didn't get beautiful shots with that, stepped up to a XXXD dslr, thinking it would make their shots beautiful... was disappointed, stepped up to a XXD dslr to make their shots beautiful... was disappointed... stepped up to a FF dslr... and still disappointed... (cause they invested money in gear, and didn't invest time in technique and knowledge). haha, they probably have a lot of lenses too...
LoL i could probably think of a couple more, but that's I came up with off the top of my head after reading photography forums for the past 4-5 years... I still shoot with a crop sensor camera, and have a XT, 40D, and a 7D (and I love my wife because all my cameras were gifts, so technically, I haven't bought a single DSLR). Probably the only reason why I would step up to a FF, 5DMK whatever would because I'm starting to get into studio photography... If I get to a point where my 7D is limiting me, then I would.. but most likely not because its just a hobby, and I can't justify the expense...
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