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canon 80 D will not fire with mirror lock up
Apr 7, 2019 08:31:46 #
whitehall
Loc: Canada
This morning, trying to catch the last of the winter, I took my Canon 80 for a walk.
As I have been away using a different camera, I forgot that I had mirror lock up “on” ( I was experimenting with water drp photography).
The camera would not take an image when I tried to shoot using the viewfinder ( After a couple of seconds I heard a click but the camera registered no image. The settings were M; 1/400;5.6, external flash was set to on, though no flash was attached as I was using an E2 GPS inthe hot shoe)
I then tried live view and had no difficulty at all.
On my return to the house, ( much warmer), I looked at my menu, saw that mirror lock up was “on”, took it off and the camera worked. Put it on again and I encountered the same problem.
Apart from a trip to the repair shop, and suggestions? (Incidentally, while writing this I tested on my 5D Mk iv, whether mirror lock up caused the same problem, and to my relief / chagrin I foud that it does)
As usual I look forward to your technical explanation and in advance thank you.
IGW
As I have been away using a different camera, I forgot that I had mirror lock up “on” ( I was experimenting with water drp photography).
The camera would not take an image when I tried to shoot using the viewfinder ( After a couple of seconds I heard a click but the camera registered no image. The settings were M; 1/400;5.6, external flash was set to on, though no flash was attached as I was using an E2 GPS inthe hot shoe)
I then tried live view and had no difficulty at all.
On my return to the house, ( much warmer), I looked at my menu, saw that mirror lock up was “on”, took it off and the camera worked. Put it on again and I encountered the same problem.
Apart from a trip to the repair shop, and suggestions? (Incidentally, while writing this I tested on my 5D Mk iv, whether mirror lock up caused the same problem, and to my relief / chagrin I foud that it does)
As usual I look forward to your technical explanation and in advance thank you.
IGW
Apr 7, 2019 08:40:29 #
Don't know what you've tried but I believe when using mirror lock on a Canon, you have to push the shutter release twice to take a photo. Once to lock to mirror up and the second to trip the shutter.
Apr 7, 2019 08:56:24 #
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Apr 7, 2019 08:58:16 #
This isn't a case of you not having your morning coffee yet, is it? That happens to me! You do remember that you must depress the shutter release twice to take a picture with shutter lock up? The first push sets focus at the halfway point and then raises the mirror at the full press. The 2nd push takes the picture. Since you have used lock up before you are obviously familiar with that. I just tried it on my 5DIV and cannot replicate your problem. I activate shutter lock up and with the usual two pushed it takes a picture. I tried it on both M and Av and with both One Shot and Al Servo focus modes. Works just fine. All I can suggest is that you go back over your settings on the "Q" screen and in the menu, if necessary, to see if something got changed that is affecting the shutter.
Apr 7, 2019 09:06:06 #
Apr 7, 2019 09:09:28 #
Apr 7, 2019 09:22:08 #
rplain1 wrote:
Don't know what you've tried but I believe when using mirror lock on a Canon, you have to push the shutter release twice to take a photo. Once to lock to mirror up and the second to trip the shutter.
Ditto! I think what the OP experience is that he only push it once and after 30 seconds or so the mirror lockup timed out and the mirror dropped back down. Most modern cameras don't allow you to lock the mirror up indefinitely.
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Apr 7, 2019 14:41:04 #
whitehall wrote:
This morning, trying to catch the last of the wint... (show quote)
I don't know what you're suggesting, you tried using mirror lock-up, using the viewfinder? The viewfinder is blocked (by the mirror) when using lock up, it can not work, that's a duh!
Apr 7, 2019 16:08:02 #
whitehall
Loc: Canada
You are wrong. It seems from your more knowlegeable colleagues that one needs to push the shutter twice, once to raise the mirror and the second to take the shot. One must be careful before one starts throwing bricks.
Apr 7, 2019 16:27:35 #
speters wrote:
I don't know what you're suggesting, you tried using mirror lock-up, using the viewfinder? The viewfinder is blocked (by the mirror) when using lock up, it can not work, that's a duh!
I think the OP didn't try to use mirror lockup but used it by accident. However, the original mirror lock up feature on DSLR were designed for camera without live view (the good old film SLR). You would focus, compose, set exposure and then lock the mirror up and release the shutter to eliminate the mirror vibration. The feature was also used to use some fish eye lens that protrude into the mirror box. Also Nikon motor drives also shoot faster with the mirror up.
Apr 7, 2019 16:30:10 #
mwsilvers
Loc: Central New Jersey
whitehall wrote:
This morning, trying to catch the last of the wint... (show quote)
I'm a little confused by what you're saying about using the viewfinder, because when you have the mirror locked up you cannot see through the view finder. That should have been a immediate dead giveaway that the mirror was locked up. Additionally, are you sure that you did not also have the 2-second or 10-second delay turned on?
Apr 7, 2019 16:36:49 #
mwsilvers
Loc: Central New Jersey
BebuLamar wrote:
Ditto! I think what the OP experience is that he only push it once and after 30 seconds or so the mirror lockup timed out and the mirror dropped back down. Most modern cameras don't allow you to lock the mirror up indefinitely.
That is correct. Of course in live, or when shooting video, the mirror does stay up.
Apr 7, 2019 16:43:46 #
whitehall wrote:
You are wrong. It seems from your more knowlegeable colleagues that one needs to push the shutter twice, once to raise the mirror and the second to take the shot. One must be careful before one starts throwing bricks.
Glad to see the issue was resolved right away. Now folks can freely argue over some wrong answers, and you can continue taking pictures.
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Apr 7, 2019 18:34:33 #
whitehall
Loc: Canada
I have had to deal with far too many sharp tongues as part of my profession, but I am truly thankful for the many helful responses. Yes, the initial attampt was by accidrnt, but as a result of the exchange I have learned something including having some coffee before going out for a shoot. Thanks again.
Apr 8, 2019 06:10:29 #
Use a remote release, the cabled type. With my 60D I lock up the mirror, focus using liveview and depress the remote. It's my betting that with two cameras you'll need to releases. Seems to be the way of things these days.
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