Dr. Pain said:
I normally shoot with aperture priority, low ISO, RAW format. My OCD nature does not do well with having to set all the manual modes
^So if you are shooting in AP, and you are stating that you shoot in low ISO... those are 2 of the 3 settings that you control in manual mode... all you would have to do differently is set your shutter speed in manual mode and there you go! The benefit to this is that while in aperture priority mode, your camera will constantly be changing the shutter speed to try to determine the best exposure, however (assuming your environment doesn't change) once you get your SS set - you won't need to change it and your photos will look more uniform from one image to the next. It is up to you, but if you are shooting in AP, then there is no reason you can't take the next step up to manual... just like detailing, a little bit of practice goes a long way. (Nice work on that 50/50 too, that truck/suv was hammered!)
For those that shoot in full manual mode, why? For me using exposure compensation or localized metering is much more effective.
Using exposure compensation is effectively shooting in what I will call 'semi-manual' mode. All exposure comp. does is tell your camera to over or underexpose an image by a given value that you input. This is the same thing as reading your meter in manual mode, and choosing to expose your image above or below the suggested "zero point" where the meter thinks is the appropriate exposure.
Using manual mode is
more effective because you have complete control of the 3 main factors that affect your exposure. Shutter speed, Aperture, and ISO. If you are shooting in auto mode, your camera decides ALL of these values for you... even if you use exposure compensation to help control the exposure you are looking for, you have no say in how the camera compensates the settings.
For example, say you want to use an exposure comp. of +1 to brighten your image - your camera may decrease shutter speed, increase (lower number, wider opening) your aperture, or increase your ISO... or some combo of this. If you are shooting a very small detail, you sure as heck want a large enough depth of field (controlled by your aperture) so that you fully capture that detail completely in focus. If your camera is making the decisions on how to control your aperture, you may have a depth of field so shallow that the image is worthless for what you were trying to show!
There is just no way around it...if you want the best images, understanding and utilizing manual mode is the only option.
The aperture priority and shutter speed priority modes are a great alternative, however you will still (most likely) use your exposure comp. quite often, which in that case - why not just shoot in manual mode? It is basically the same thing!
As far as the localized metering comment... that will definitely help your camera to understand what you are trying to expose for, however I still feel the metering systems are a simply tools used to help you guess at what your settings should be, which is why manual mode is so powerful - you can control all of your settings.
Another very powerful tool is knowing and understanding post-processing techniques to maximize your results, but that is neither here nor there.
**I am going to make a "Basics of Photography" write up sometime soon so that everyone can understand how to maximize detailing images, as I feel the quality of my images play a huge role in portraying my abilities as a detailer to my potential customers.
Hope that helps!