Originally posted by SpecialK Contrary to popular and frequently expressed opinion, there is no difference in image quality if the camera sets the exposure (in one of the semi-auto modes such as Av or Tv) or you do it manually - as long as it is the correct exposure.
There is nothing to be "learned" by setting the aperture and shutter.
The important thing is interpretation of the exposure meter. Backlighting, or large dark or light areas, and reflections will fool a meter and, in a semi-auto mode, mess up the exposure. That is what the Exposure Value Compensation feature is for - correcting the semi-automatic camera exposure to what you think/want it to be. And, EV comp does not work in Manual mode, by the way.
The "advantage" of Manual mode is that you will get a consistent exposure - right or wrong as you have found out.
I can't really tell if SpecialK and I agree or disagree. I think we disagree, but perhaps not.
There's no special credit due the photographer for shooting in manual mode. A great photo is a great photo even if it was taken in green (fully auto) mode on the K10D/K20D - for that matter, even if it was taken with a point and shoot. I think SpecialK would agree with that.
I'd go further and say that, if you know what you're doing and can get the right exposure, shooting in P - especially in P on the K10D/K20D which has some special properties - or Av or Tv, it's all fine, so long as you understand what you're doing. I think SpecialK would agree with that.
But there are advantages to shooting in M, at least to shooting in M often enough to feel completely comfortable with it.
First, I think there really is something to be learned from shooting in M. Having to control everything is the only sure way to learn to THINK about everything.
Taking a technically good shot isn't just a matter of getting the meter's exposure indicator right in the middle (or the desired distance from the middle to the left or right). It's about getting the right exposure
using the right aperture and shutter speed, to freeze the action and/or provide depth of field as needed. In other words, if 1/200th sec and f/8 makes the camera's meter happy, 1/800th sec and f/4 is going to make the meter equally happy. But these pairs of settings will NOT produce the same photo! And it's often NOT an either/or question (am I interested in depth of field OR am I interested in freezing - or blurring - the action?) but a matter of balancing them both just right. You can't really learn to juggle if you practice with just one ball, and you can't really learn to master the balance of aperture, shutter speed (and ISO) if you only think about one of these at a time - or if you think your job is to get the meter into the right spot.
So I think that shooting in M is without question the best way to learn to be in charge of every aspect of every shot, every time. You can
almost do it all in P mode or Av or Tv, if you really know what you're doing - but it's
harder to do things that way. Thinking in terms of EV is like using a mechanical arm to pick up a stuffed doll inside one of those arcade challenges: it's much harder than it would be to just pick up the doll with your hands. Getting the right combination of aperture and shutter speed by futzing with +/- compenation - even on the K10D/K20D - isn't as easy as simply moving the aperture or shutter e-dials. It's harder to do it in P in part because holding down +/- with your thumb while moving an e-dial is not as easy as just moving an e-dial; but also because P (and Tv and Av) don't always work as you'd like. There are times - when the light isn't perfect or the scene has a high dynamic range - when I want, for example, to get a certain combination of aperture and shutter that the camera just won't give me in P, unless I fiddle with the +/- button a good bit. And while using +/- for minor adjustments in generally good light is easy enough, using +/- to gain complete control over aperture and shutter simply isn't as easy as using M. It just isn't. I am all for easy, I really am. But sometimes, the method that LOOKS easier really isn't, not even in the short run.
I think hyperprogram (P) mode on the K10D/K20D is brilliant. (And I know that the OP has a K100D, so I'm sorry about going on about this.) I have actually spent the last couple of months giving P the old college try, as a break from shooting mostly M. But I've about given up. I'm back to using P only when I know I'm going to have to shoot fast and really don't expect to have ANY time to think about anything other than trying to get the subject into the middle of the lens. If the light is a bit iffy, I switch from M to TAv (on the K10D/K20D) and let the camera adjust the ISO as needed. But if the exposure seems to change from shot to shot (because sometimes I'm shooting directly toward bright lights and one second later I'm shooting a shadowy scene), then I use P. I almost never use Av or Tv any more, since P (on the K10D/K20D) gives me access to those modes: I just have to move the aperture or shutter e-dial in P mode and I'm effectively in Av or Tv mode. But this is a small percentage of my shooting.
But on the third hand, I want to return to where I started. There's no special prize for shooting in M mode. I'm rather fond of Ken Rockwell. He's controversial, but I think it's obvious that he TRIES to be controversial - not just because he enjoys the attention but because he's a teacher and he's trying to make points. "Why your camera does not matter" is a classic essay with a brilliant and important point and I was stunned that the folks at Luminous Landscape, smart guys (including Sean Reid!) seem so totally to miss Rockwell's point. Anyway, Rockwell has another essay, called
Modern Exposure. I think he's throwing cold water on the idea of using M mode. So I suspect that, if he were to reply to me, he'd tell me I'm wrong. I don't think I'm wrong but I want to concede that his point is more important than mine. If you can get the right photo, and get it consistently, then it doesn't matter what mode you use - and if you can learn to maintain complete control at all times over aperture, shutter AND ISO and you can do it in any mode other than M, then you are doing everything a good photographer needs to do.
Will