Originally posted by istDL-K10D The 3 starwar characters is a good example for wrong exposure in green mode. It is hard to explain why the green mode chose slower shutter speed with wide aperture for bright sun light. no clue.
The picture of Darth Vader says it was taken using spot metering. If you spot metered off a black object, the exposure you got as a result is pretty much *exactly* what should be expected.
I checked quite a few others, and almost *all* seem to have been spot metered, and all of them came out pretty much exactly as should be expected when using spot metering. Most overexposed because you metered off a dark object, some (like the purse) underexposed because you metered off a white object.
Conversely, the few pictures I saw that used center-weighted multi-segment metering were of a scene dominated by a white background. And exactly as it is supposed to, the camera rendered the scene as approximately the equivalent of 18% gray on average - which is to say, quite a bit darker than it actually appeared. That's the way cameras are *supposed* to work when metering off white objects; you're *supposed* to have to dial in positive exposure compensation. I would highly recommend checking out a book on exposure to learn more.
Quote: I did see some improvement in changing from spot metering to center weighed
Well, *of course*! Spot metering is not a mode you should be using unless you understand how to use it - how to choose an appropriate subject for the metering before actually composing your photo. Simply pointing directly at the subject and shooting using spot metering is *supposed* to produced results pretty much exactly as you got. Center-weighted or multi-segment metering are much more appropriate for using as a "point and shoot", except even then, you need to know that when dealing with light colored (or dark colored) scenes, you'll need to dial in exposure compensation.
Quote: More over in the green mode when I use FA lens with other than aperture ring set to "A" my auto focus does not work. Is there a setting I should change to enable it, I do not know.
No, as long as you don't change the AF switch to MF, it should still auto-focus even when not in the "A" position, as far as I know. However, I suspect it won't be able to use any but the center focus point.