On Mar 20, 2005, at 7:58 PM, David Goldwasser wrote:
I have used exposure bracketing on Canon 300d and 20d hundreds of
time without any problems, however had problem a few days ago when
shooting in cold windy environment with snow. I was shooting an 8
shot single row pano with camera in manual and shots spaced at 1 and
2/3rd stops.
So most came as expected, however on one of the sets I got three
shots all at same shutter speed (1/250 - the middle of the three
speeds).
Oddly, the Exposure Compensation shows the +/- 1.7 for the first and
third shot but the shutter speed did not change. Yet right after this
the next set shot just a second later was back and working fine.
This was not a critical shot but is disconcerting. Maybe while still
on site need to take the time to run through shots to confirm
histogram or EXIF data to see that it worked correctly. Up to this
point I could just assume they worked. Of course on longer exposure
settings I could probably tell by the rhythm of the shutter sound if
there were three of the same vs. progressively longer exposures.
Has this happened to anyone else? I'm hoping a snowflake getting in
the wrong place caused a temporary glitch and that it won't happen in
normal shooting conditions. (I was snowshoeing in Rocky Mountain NP,
temp about 10-15 winds about 30mph - Buuuur!)
Very weird! I've shot almost 10,000 frames with my 20D, probably 1/3
of those for panos (and most of those bracketed), and have never seen
this happen!
Granted, I live in SoCal, but it's not been all sunny this year :)
If it happens again under similar circumstances please let us know!
Very interesting.
-R
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