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|| SportsShooter.com: Member Message Board
Canon Mark IV blowing out frames?
Chris Doane, Photographer
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Detroit | MI | USA | Posted: 7:32 PM on 02.18.10 |
| ->> Anyone using the Mark IV in aperture priority mode have the camera randomly blow out several frames in a row on its own? |
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Jim Pierce, Photographer
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Waltham | MA | USA | Posted: 7:57 PM on 02.18.10 |
->> Chris,
I rented a mark IV a month or so ago and was the first to use it and I "think" this happened to me as well. I say "think" as I am taking your term of "blow out" meaning totaly black images. I could also hear the shutter make an abnormal noise. I had this for a week-end, was the very first user and it happened 3 times out of 5000 images. I missed about 6-8 total.
So if "blow out" means totaly black This has happened.
Jim |
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Chris Doane, Photographer
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Detroit | MI | USA | Posted: 8:24 PM on 02.18.10 |
| ->> Hmm I got badly over-exposed images today. Not totally white, but certainly pretty awful. |
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Jim Pierce, Photographer
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Waltham | MA | USA | Posted: 8:30 PM on 02.18.10 |
->> I was thinking that is what you ment... I did not get any of these but did get a couple batches of 2,3 images totally black and the shutter made a totally different noise.
Could be the same type problem, the shutter for me stayed closed, yours stayed open....?
Since I can't get my hands on a mark IV and wanted to use it for the high ISO perfromance I have decided to wait until fall... don't see what advantage this has over my mark II's and IIn now that I will be outside in a few weeks.
Jim |
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David Welker, Photographer, Student/Intern
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Springfield | MO | USA | Posted: 8:52 PM on 02.18.10 |
| ->> What metering mode were you in and what were you metering off of? I know that you probably realize all of this but I just wanted to ask. |
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Chris Doane, Photographer
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Detroit | MI | USA | Posted: 10:04 PM on 02.18.10 |
| ->> Evaluative, shooting a pretty neutral scene with flat light. No crazy highlights or shadows. Certainly nothing even close that would "trick" it into making the exposure this far off. |
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Will Powers, Photographer
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Denver | CO | USA | Posted: 12:23 AM on 02.19.10 |
| ->> What!!!! No serial numbers? How will we ever figure this out! |
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David Welker, Photographer, Student/Intern
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Springfield | MO | USA | Posted: 12:52 AM on 02.19.10 |
->> Chris,
Could you provide a sample by any chance? I know it may not help too much but you never know, it may. |
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Brad Mangin, Photographer
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Pleasanton | CA | USA | Posted: 12:56 AM on 02.19.10 |
| ->> This used to happen to me with film cameras when the aperture blades in my lenses would get stuck and fail to stop down during exposure, resulting in sporadic over-exposed chromes or negs that were shot at 2.8 instead of 8.0 with wide angle lenses. |
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Monty Rand, Photographer
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Bangor | ME | USA | Posted: 7:38 AM on 02.19.10 |
| ->> What, you need my social security number again......008-67-5309....... |
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Gregory Greene, Photographer
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Durham | NH | USA | Posted: 6:26 PM on 02.21.10 |
->> Hmmmmm, I had this happen a few times when I first shot
with my 1D4. Unexplained overexposures during a couple
days of overcast weather shooting my finacees horse.
Only about 8-10 frames but when you have a new camera you
are micro analyzing everything. Haven't had it happen
since and I've shot many games and more equestrian stuff.
It was very cold those days, about 5-10F, and to be honest
I also had some weird AF lock ups at the same time. I'm
wondering if my 70-200 zoom experienced something similar
to what Brad is suggesting caused by the temp.
It's a 2003-2004 70-200 f2.8 non-IS and maybe is due a
checkup. |
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James Broome, Photographer
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Tampa | FL | US | Posted: 7:42 PM on 02.21.10 |
->> I haven't
had this
happen to
me yet. But
I will
be on
the
lookout. |
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Darryl Dyck, Photographer
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Vancouver | BC | Canada | Posted: 12:33 PM on 02.24.10 |
->> I've had this happen at least twice now, both times on manual exposure on an overcast day within a 3 to 4 frame burst and no the light did not change.
The first time was nearly a month ago - one of the 4 frames was at least a full stop brighter than the other 3 in the burst and it was not in cold weather.
The same thing happened again yesterday during oly coverage on cypress. It was cooler than it's been but once again not cold enough to cause lens problems. I haven't had any time to get into the mpc to talk to the Canon folks about it.
DD |
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