I've been visiting the site for quite some time now and recently joined. Thought I'd introduce myself by asking the requisite novice question.
I've learned a lot reading the various posts here (thank you all). And I've picked up some modest skill over the course of the past 2.5 years since purchasing my 500D, but I have yet to find a shot or a shooting situation yet, in my experience, that requires I shoot in manual mode. I haven't done any macro or sports shooting, and I have almost no experience using flash so perhaps those are some of them.. I generally shoot landscapes, city-scapes, architecture, portraits, and birds. I shoot with the following glass; EF 50 1.4, EF-S 17-85, EF 70-200 f4L non-IS, & a Speedlite 270EX that collects a lot of dust.
So the question is, when do you find yourselves shooting in manual, or what situations require it?
Typically when shooting landscapes or portraits I rely on "Av" mode, since aperture is the most key adjustment for getting the right DOF for each situation. When I'm using my tele-zoom I tend to switch over to "Tv" mode, due to the amount of camera shake at the longer Focal lengths, keeping my shutter speed high enough being the priority in those instances. In either mode I still have the ability to adjust my exposure with the touch of a button so I've never really been "forced" to have to use manual to either get the shot or expose it properly or at least get it the way I want it exposed.
Any insight would be greatly appreciated, thanks!!!