I've been reading and I don't understand the use of 'movements' on LF cameras. Why is that useful? Thanks.
camera movements are used to "correct" before you depress the shutter.
if you have your tripod extended high and still can't get what you want in the view
you can use rise to eek a bit more of the image out of "image circle " or shift side to side
and it does the same thing. if you have to tilt the camera back you can adjust the film plane
to straighten out the lines so they are perpendicular again ( the front standard too if you want to )
you can change what you have in focus and what you don't like mark tucker does with his "plunger cam"
and you can make things in focus that woudln't necessarily be in focus if you don't have a small enough aperture
by changing around how the front and rear standards are situated so you can have extreme foreground "to infinity and beyond" in focus
if you are using a press style camera, it isn't hard to do rise /shift handheld, you just raise or slide the standard but the other stuff
takes a bit of futzing around and it really isn't too easy to hand hold a view or field camera that isn't made to be handheld.
years ago before film became so high-tech, so sharp and resolved there was a huge difference between 120 film and sheet film
now unless you require the movements of the large format camera, or you yearn to use old junk store brass lenses, magnifying glasses
or vintage optics the main reason to use a LF camera ( unless you are making 30x40 enlargements ) is to have a good time.
not saying using a MF or small format camera isn't fun, but it is a different "fun" than larger format cameras.
a lot of large format users use it for bragging rights ( my camera is bigger than yours and my lens cost 10,000USD ) or the zen thing ( slow meditative photography )
or just because they are bored with film so they use a LF camera to do some olde fashioned process that requires a big negative
( unless they want to make an enlarged ortho film negative or hybrid negative the big negative skips the step ) ...
there are lots of different cameras out there and reasons to use them, some old, some new but they are all basically the same, a box and lens
good luck !
john