Originally posted by madisonphotogrl Thanks Will. I think it my be deliberate too. I think it's sort of nice because a photo professor once told me if you are over exposed (or maybe it was underexposed too much) you can't really recover.
Nikki,
Couple of points.
First, you should be aware that the camera's idea of correct exposure may not be the same as your idea - indeed, it frequently isn't. The histogram can be very helpful, but you should use the histogram, not let the histogram push you around. The feature on your camera that tells you when you've blown the highlights (or the blacks) is actually more useful than the histogram, much of the time. I took a photo of my daughter sitting in a comfy chair in the living room late one evening, reading by the light of a floor lamp. The camera thought the photo was terribly underexposed, because most of the pixels in the photo were quite dark. But that was the point.
Now, to get control, you must know the camera and be able to push all the right buttons. You need to know the different exposure modes and how they work. You must understand how to use M mode. You must understand how to adjust the meter's bias in modes other than M - say, in hyperprogram (P) - to force the meter to "overexpose" or "underexpose" when you want.
The different exposure modes have their purposes. Matrix metering works very well for quick shooting or if you just aren't sure what to do; I find it works pretty well when I'm using flash, too. Center-weighted metering, um, gives more weight to the stuff that's in the center, which is often where your subject is - often, but not always. (Remember to lock exposure and recompose if the subject is not in the center.) Spot metering gives you even finer control than center-weighted, but like the other modes, spot metering works best if you really understand its pros and also its cons. Going back to the example of my daughter reading in the dark by a small light: If I had spot metered only the brightest part of the shot and used the exposure settings the camera suggested, I would have badly underexposed the shadows and I didn't want to do that. I wanted the stuff in the background or on the sides of the photo to be just barely visible. Now, that's the paradox of spot metering. Pretty much the POINT of spot metering is that it allows you to meter a small area of your scene without regard to the exposure of the other areas. But if you really don't care about the exposure of those other areas, well, you're probably not doing your job very well. The fact that my daughter's face was the most important part of that night-reading photo doesn't mean that the rest of the photo didn't matter! To the contrary, the darkness in that photo was a very large part of the
point of the photo! Many photos have a large dynamic range, so that different parts of the photo may want different camera settings to be "properly" exposed. Spot metering allows you to get an idea what those individual areas of your scene require. But you have to know how to balance it all out. That's why center-weighted metering is there. That's why the EV button is there. That's why M mode lets us do whatever we want.
So you need to have in your head a good idea of the dynamic range or range of exposure values ("zones") in the scene you are photographing. When the dynamic range of the scene is greater than the dynamic range of your camera - and it often is - then YOU need to figure out what you want to lose, highlights or darks. The answer is usually "darks," but not always.
This is a big subject, one of the biggest in photography.
Will