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|| SportsShooter.com: Member Message Board
7D shutter sticking
Jonathan Nimerfroh, Photographer
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Philadelphia | PA | USA | Posted: 1:16 AM on 02.26.10 |
->> I bought two 7ds just before the holidays and I have noticed that both have the same issue.
When I shoot a burst of photos I can hear the shutter stick or drag for one frame then it continues to fire.
I seached for other threads on this and even for other cameras but no luck.
I just did some test shots and got it to happen usally after 200-300 frames. Did it in both manual and av mode.
Nothing strange apears in the photo and the settings (apature/shutter speed) are the same in the frame before and after and in the sticking shutter frame.
If anyone has any advise please let me know
I will post the exit info on Monday if that helps.
Other then this the cameras have worked fantastic! |
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Mark Peters, Photographer
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Highland | IL | USA | Posted: 7:53 AM on 02.26.10 |
->> Just to clarify - the frame where you believe the shutter is sticking or dragging is still properly exposed?
If so, are you sure you just aren't hitting the buffer limit? |
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Jonathan Nimerfroh, Photographer
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Philadelphia | PA | USA | Posted: 1:00 PM on 02.26.10 |
| ->> Correct. It's properly exposed. |
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Jonathan Nimerfroh, Photographer
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Philadelphia | PA | USA | Posted: 1:04 PM on 02.26.10 |
| ->> Will the shutter stick when it hits the buffer limit? |
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Robby Gallagher, Student/Intern, Photographer
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Brookings | SD | USA | Posted: 1:41 PM on 02.26.10 |
| ->> I had the same problem with my 50D for a while. |
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Armando Solares, Photographer
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Englewood | FL | USA | Posted: 2:16 PM on 02.26.10 |
| ->> Yes - when the buffer hits its limit the camera pauses for a brief second. |
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Chris Large, Photographer
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Okotoks | AB | Canada | Posted: 2:22 PM on 02.26.10 |
| ->> One way to see if its the buffer - set it to raw and jpeg then blast away as fast as you can...it should "lag" pretty quickly as the buffer fills up. Now try it jpeg small only, it should shoot and shoot and shoot because its not filling the buffer. |
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Brad Barr, Photographer
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Port St. Lucie | FL | USA | Posted: 2:31 PM on 02.26.10 |
->> "got it to happen usally after 200-300 frames"
that sounds like a full buffer to me too.... |
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Jonathan Nimerfroh, Photographer
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Philadelphia | PA | USA | Posted: 4:20 PM on 02.26.10 |
| ->> Sticking as in sounds like it takes twice as long as any other normal frame. This happens sometimes after just 2 or 3 photos. Not just after 200-300 photos |
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Eric Canha, Photographer
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Brockton | MA | United States | Posted: 4:45 PM on 02.26.10 |
->> Jonathan a STICKING shutter would result in improperly exposed files.
I am taking from your description that the time it takes for the camera to cycle and take the next shot is longer than what you are expecting. There are several reasons for this to happen. A full buffer is the #1 reason people experience this however depending on how your camera is setup it could also be CPU lag. I don't shoot Canon but on my D3 if I am shooting high iso and asking for the built in noise reduction AND dynamic lighting and X and Y then I get NOTHING near the number of frames that I will get shooting plain vanilla files.
What you may consider is resetting the camera and then setting the menus again. It could just be a combination of settings that are taxing the computer in the camera. |
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Jonathan Nimerfroh, Photographer
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Philadelphia | PA | USA | Posted: 6:59 PM on 02.26.10 |
->> Just did the test with raw and jpeg set. Yes you get a pause when the buffer is full. But this is differnt from the pause during a frame.
What I get is the shutter goes down fine then the next frame the shutter goes down but sticks which you can hear then the next frame goes off fine.
It's definatly the shutter or blade that sticks between multiple frames. |
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Chris Large, Photographer
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Okotoks | AB | Canada | Posted: 7:03 PM on 02.26.10 |
| ->> I'm thinking you need to take them to your dealer for another opinion or contact cps. Very strange that both have the same issue. My 7 is great with no problems - hopefully yours gets resolved and you will let us know what the story is. |
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Mike Morelock, Photographer
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Greenwood | AR | USA | Posted: 7:49 PM on 02.26.10 |
->> Could be the mirror as well. A couple of things to try, enable mirror lockup, take picture. You'll hear the mirror go up, and then 2 sounds, 1 the shutter, second the mirror closing. Can you distinguish with those sounds if it's mirror or shutter.
Number 2, push the start stop button to put the camera in live view, well that's how mine's set up, there's probably other ways. Again this locks the mirror up. Now hold down the shutter and rip off some shots. Any hesitation there? That should just be the shutter working. |
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Mike Morelock, Photographer
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Greenwood | AR | USA | Posted: 7:57 PM on 02.26.10 |
->> Something else I thought of, is this in AIServo tracking a moving object? How do you have Custom Function 3-2 set? If you have it on tracking priority maybe it will hesitate while it tries to track the object. Or you can set it to just give max frame rate, good focus or not.
I'm assuming you have backbutton focus, what if you just stick it on a tripod, get it focused, then don't touch the autofocus button and rip off a bunch of shots, still problems? This would just eliminate whether it's focus tracking bogging things down or if it's shutter/mirror related. |
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Jonathan Nimerfroh, Photographer
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Philadelphia | PA | USA | Posted: 12:49 PM on 02.27.10 |
->> On a tripod same issue.
Say I shoot a burst of 3 photos set in manual at 1/125 at f2.8.
The first and 3rd photo sound like it's at 1/125 which is normal but the second photo sounds like it was at 1/25. But the setteings were never adjusted. The shutter on the second photo sounds like it's sticking. It's not buffer on 3 frames |
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Mark Peters, Photographer
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Highland | IL | USA | Posted: 4:34 PM on 02.27.10 |
->> If the shutter was sticking open it would not be properly exposed.
Try this. Get a clock with a second hand on it.
Set up on a tripod and take a 12-20 frame burst using a remote release - preferably wireless.
Layer the images in PS, Crop 100%, and look at the distance the second hand is traveling frame to frame.
If the shutter is indeed "sticking" between frames you should see a very noticeable jump in the distance the second hand travels in the first frame following the "sticking".
Since you say the frames are properly exposed, the shutter is certainly not "sticking" open. Rather, it suggests that something may be keeping it from firing the next frame. There are a variety of setting or issues which could be causing this. |
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Israel Shirk, Photographer, Assistant
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Boise | ID | US | Posted: 5:41 AM on 02.28.10 |
->> That doesn't happen from a shutter sticking.
A broken shutter will *always* result in exposure problems or very evident artifacts in your images. No exceptions - it's just not physically possible for something that delicate to break and not show major issues.
I'm guessing that might be a terminology thing though? You just sound really confusing saying it's your shutter when it's out of the realm of possibility... Your mirror goes up and down (the loud clapping noises) and then your shutter makes a high pitched whir, and a broken shutter generally makes a very very similar sound to a working shutter. The difference in noises is probably delay between the mirror going up and the shutter going off.
It could be something like a loose connection, but more likely since you're having problems with such abnormal consistency, it's got to be something in your firmware/custom functions, lens connection (from how you're handling the lenses or cameras), or some other problem that can easily be narrowed down.
Simple troubleshooting:
Just reset your custom functions to the original values, see if it changes. Update/downgrade your firmware to see if that changes it. Clean your lens contacts and try it with someone else's lens. Try different shooting and autofocus modes. Try a different battery/charger. And try a different mfg of CF card - those ebay ones are usually counterfeit. Turn IS off, and shoot manual focus.
If none of those helps, just go CPS with one of them at a time in case it is something that you're doing - so you don't have to pay for both. |
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Bill Ross, Photographer
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Colorado Springs | CO | USA | Posted: 8:28 AM on 03.01.10 |
| ->> I would think it's probably the buffer being full. I had a problem like that on my D3 and it was more about my focus selections. I had it set wrong. Like, not taking the picture unless I had a focus lock. I turned it off and I had no more pausing issues and my focus didn't appear to be affected. |
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Eric Canha, Photographer
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Brockton | MA | United States | Posted: 10:48 AM on 03.01.10 |
->> Jonathan all things being equal IF and I doubt this ENORMOUSLY at this point, the shutter is sticking then during that 1/25 exposure the viewfinder should remain black as the mirror will still be up out of the way. IF the mirror was to come down while the shutter was open you should see some kind of artifact from the mirror.
you say ---> I bought two 7ds just before the holidays and I have noticed that both have the same issue.
The chances of getting TWO bodies with sticking shutters are just monstrous. As for the idea that you would have a blade stick more than once or twice before it warped and was flapping in the mirror box is also outside of the parameters of how these things work. Any blade that would be sticking or mis-aligning with that level of regularity would have already destructed.
Personally I believe that you have found some combination of settings that cause the camera(s) to have brain cramps. Do a total reset of the camera and reinstall the firmware. Until you've done that you won't know. You're boxing yourself in to a zebra hunt. Rule out the simple and obvious first. |
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Jonathan Nimerfroh, Photographer
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Philadelphia | PA | USA | Posted: 3:44 PM on 03.03.10 |
->> Everyone thanks for your replies. I did a total reset on them and that work.
Can anyone share their custom functions?
Thanks! |
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Eric Canha, Photographer
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Brockton | MA | United States | Posted: 4:10 PM on 03.03.10 |
| ->> ;) |
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Jonathan Nimerfroh, Photographer
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Philadelphia | PA | USA | Posted: 10:33 AM on 03.04.10 |
| ->> Is it just me or is it hard to see the center focus light up in bright sun.... (vf display illumination) |
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