SUMMARY: Wordless Wednesday
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Life with dogs, dog agility, après dog agility,
life with a camera, and who knows what.
Ex Pertinacia Victoria.
More explanation: Jan 17, 2011: Here's the thing: I had the camera on Program mode, but because most of my shots included large fields of snow, I had set the exposure compensation to plus 1 and 2/3 stops, so whatever f and time the Program mode picked, it would make it 1.67 stops slower. (Because by default it will try to make all that white into middle gray, and I want all that white to be white.) It was also overcast, so not bright light, but a lot of reflected light everywhere, from sky and snow. Rough conditions to try to get a good reading! So the f & tv that the camera picked would depend on where its metering point was. I was using centered spot metering, which makes it more sensitive to the exact center of the image. I didn't think about that when I handed my friend the camera. So, naturally, she started with me and dogs in the very center, so we were pretty large as a percentage of the spot metering area, so really there shouldn't have been *any* exposure compensation because our colors are kind of midrange, and that compensation I set meant that, yeah, we were overexposed. The ones were we *weren't* overexposed are the ones where we are off-center, so the spot metering was metering off of a mostly reflective white snowy area in the middle of the frame, so the exposure compensation worked the way I had intended. I just got lucky that she started aiming off-center (not even sure whether intentional or not, and I didn't think about it until after we were done). So if I'd been shooting in manual, if I had spot metered at the center where it was mostly snow, I'd have picked, say, the f I wanted, adjusted the time so that the camera thought it was metered correctly, and then made it 2 stops slower to accommodate the bright white. If I had spot metered at where I and the merle girls were, I'd have set the f I wanted, adjusted so that the camera thought it was metered correctly, and then just used that. |