Originally posted by kb244 Thanks, figured it would be more bottom emphasis (so that in landscapes the sky doesn't completely overwhelm the meter reading compared to the ground), though I'm kind of confused how the % adds up, is it saying that light from 100% of the dead center is factored, and just outside that range only 60% of the light of that region, and then the reading % wise of all those readings are averaged?
Cuz usually what I'm trying to do when I'm metering shadow against mid against highly I'm pointing the center at what I would consider say the shadow I would want least some detail in, and going up a stop or two from there depending on the film I'm using.
What I find interesting about both patterns is that 100% spot in the center. To me, that means "spot meter," and if the camera can be aimed accurately, it should work as one. But I suppose you're right in that some averaging is taking place. Still, the LX's pattern is tight and is reminiscent to me of the Nikon F3's simpler but very effective 80/20 pattern. The MX's is not as tight, but should still be tight enough to keep spurious light sources from affecting the metering too much. It's definitely bottom-centerweighted, which can be effective when shooting subjects against the sky outdoors in landscape mode. But when one rotates the camera to a vertical position, it's gonna bias exposure to the right if you rotate the camera counterclockwise and to the left if you rotate it clockwise. The LX's pattern shows some bottom centerweighting also, but it's tighter and more centrally balanced, so it probably won't skew exposure as much when rotated.
I own both an LX and an MX, but I'm a recent owner of both, so I don't have enough experience shooting with them yet to have developed any sort of feel for the way they tend to bias exposure. That will just take some time and at least several rolls of film. So my above comments are simply based on evaluations of the patterns and, unfortunately, not yet experience.
I think it's important to remember that all a camera's meter wants to do is interpret a scene as 18% gray. So when metering a shadow area, it's helpful to remember this. A camera will want to open up exposure when metering a shadow area to 18% gray -- a mid-tone -- when you may want to keep the shadow area at least somewhat dark. Unless you really do want to open up the shadows so they're a mid-tone. So be careful not to open up too much or you'll probably have burn-through in your highlights areas. I would instead look for mid-tones in the subject area and meter off these. A good way to open up the shadows, yet preserve the highs and mid-tones is to use fill-flash. I find it works very well.