Tim do you mostly use AV or TV or Manual mode
and what about these options
AI Server AF 1st and there is 2nd image priority what option do you use Release priority or Equal priority or focus priority ??
also if i use my flash the white balance you set it to flash or daylight
I actually vary and use a little of everything... I use P, Av, Tv, and M and it completely depends on the situation.
When I approach a shot, I size up my options and whether I think I'll be constrained.
Av: If nothing is moving (so I have all the time in the world to take the shot) and the subject isn't particularly black nor particularly white (the light meter is likely to get a fairly accurate reading) then I'll use Av mode because now I can pick the aperture I want (for the depth of field control that I want) and let the camera deal with the shutter speed. I could have used manual mode, picked my aperture, took a reading and let the meter guide me into adjusting the shutter speed until a correct exposure is indicated on the meter, but that would just give me the SAME exposure that using Av would give, but it would take longer. So I use Av.
Tv: If I need to freeze action ... or if I want to deliberately imply motion, then I need to make sure I get the shutter speed I want. I'll set my appropriate shutter speed and let the camera deal with the aperture... BUT... aperture is one of the most limited controls on the camera (because lenses don't have an infinite aperture adjustment). So I do still need to be aware of the limits of the lens (e.g. you wouldn't want the camera needing to go to f/2 when the lens only goes down to f/2.8). ALSO... aperture is a major factor (but not the only factor) in depth of field. I do have to make sure my subject does not require a broad depth of field.
M: If I'm suspicious of the accuracy of the meter, I may meter the scene with my incident meter. Often if I have "all the time in the world" to take the shot, I may use the incident meter anyway (that's a hand-held light-meter... not built into the camera. You hold the meter in the light that will be falling on your subject and take a reading. Incident meters are VERY accurate whereas "reflected" meters (which is all a camera can use as a built-in meter) can only see the light which reflects off the subject and into the lens -- and those can be fooled if the subject is reflect more light or less light then the average subject reflectivity.
HOWEVER... I ALSO use manual mode when I want to over-ride what I know the computer will do. There are MANY cases when the computer's default behavior isn't what we want and it's better to use manual. This is a learning process and you'll be picking up tips and learning little nuances for years.
One of the nice things about using an Av or Tv mode vs. the M mode is the speed at which the camera can react to variable conditions. Say I'm at a concert and the lights are flashing as part of the light show. It'd be tough to dial the exposures up and down in manual, but in Av or Tv mode the camera can react to the light which exists in the moment. You do have to be careful because the default mode is to meter, lock settings, and then stop metering. You can force the camera to meter on-demand (which is what you should do if you've got wonky lighting.)
I will sometimes use P mode -- not very often when shooting, but I think of it as a "safe" mode to park the camera in. When I'm done shooting, I return the camera to safe settings with the following line of thought... I don't know when I'll next need the camera and if I'll need it "in a hurry". But if I do need it in a hurry I need to know that the camera is just "ready to go" and I wont be shooting and then discover that I had customized all the settings the last time I used it. I want the camera to be back to settings that will generally just work without thinking about it. P mode is basically a lot like full auto mode (the green box) except that P mode allows you to override things (full auto does not.)
My other half does not know how to use many camera controls. If I hand the camera to someone else .... I usually turn it to full auto so that the camera WILL work and they can't inadvertently override some setting that ends up blowing the shot.