Dark Viewfinder
Aug 10, 2012 10:22:46 #
Some of you show-offs will say you knew this all along, but it's something new to me. I looked through the viewfinder of my D7000 while the battery was charging, and the view was rather dark. When I inserted the battery, it brightened up. The camera was not turned on either time. I'm guessing that the battery opens the aperture whether the camera is turned on or not, so there must be some constant drain.
Aug 10, 2012 10:55:42 #
Aug 10, 2012 11:47:57 #
MT Shooter wrote:
You must have had a "G" type lens on the body at the time.
Gee, I don't know. Let me check. Yep, "G" it is - 18-105mm AF-S DX G ED. So, what's going on?
Aug 10, 2012 11:52:13 #
You've just been "G"elded! G lenses stay at the minimum aperture when no power is applied. When power is applied they go wide open for viewing and metering, then stop down to the needed aperture to take the image. "D" lenses will mechanically adjust to whatever aperture you set them to. When auto metering is used, they also need to be locked at minimum aperture and then act the same way as a G lens does to meter and take the image.
Aug 10, 2012 12:05:48 #
MT Shooter wrote:
You've just been "G"elded! G lenses stay at the minimum aperture when no power is applied. When power is applied they go wide open for viewing and metering, then stop down to the needed aperture to take the image. "D" lenses will mechanically adjust to whatever aperture you set them to. When auto metering is used, they also need to be locked at minimum aperture and then act the same way as a G lens does to meter and take the image.
I was aware that they could not have the aperture adjusted with a lens control, but I didn't know about the battery thing.
I think a modern lens is more complicated electronically than a car from the 60's.
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