Canon 50D bulb length
Apr 27, 2012 10:41:39 #
DaveJS
Loc: Philadelphia, PA area
Something that has bothered me, and I can't find it now, but I have read that if you leave the shutter open too long you can damage the sensor. Any truth to that? Is there a sec/min time to keep it under? I know the noise will increase the longer it's open. Also there is heat buildup and of course it drains the batteries faster. I just don't want to burn the sensor out when taking shots through a telescope. I also want to try some shots in the city but long enough exposure so that people can't be seen.
Apr 28, 2012 07:09:27 #
dbmaxwell
Loc: Mogadore, Ohio
I do a little astrophotography with a 60d and have left my shutter open for many minutes. Usually no more than 5 minutes though, due to light pollution.
Apr 28, 2012 07:36:24 #
I searched the Canon data base and the only reference I saw was using the bulb setting in Live View, causes the sensor to get hot. They recommend only using live view and the bulb setting for a few minutes. Gary http://cpn.canon-europe.com/content/education/tipsandtricks/2782.do
DaveJSchumaker wrote:
Something that has bothered me, and I can't find i... (show quote)
Apr 28, 2012 07:49:11 #
DaveJSchumaker wrote:
Something that has bothered me, and I can't find i... (show quote)
When I started doing long exposures with my DSLR, I thought the same thing. Is this OK for the camera? With the old mechanical SLRs, it was fine. With a DSLR, there must be something electrical going on to keep the shutter open.
Lots of pros use long exposures, and the camera makers don't recommend against it, so it must be OK. Actually, if a long exposure would damage the camera, there would probably be a fail-safe designed into it.
Apr 28, 2012 13:33:51 #
DaveJSchumaker wrote:
Something that has bothered me, and I can't find i... (show quote)
Is this any different from taking video for 10 minutes? I have a T3i and it doesn't heat up for videos back to back of 30 minutes or more.
Apr 28, 2012 13:38:20 #
DaveJSchumaker wrote:
Something that has bothered me, and I can't find i... (show quote)
It camera stops after about 11 minutes because of file size but I just start recording again and haven't had any issues just need lots of battery power.
Apr 28, 2012 23:35:54 #
I just watched a DVD last night on "Painting" The photographer left the camera on buld for 20 minutes while he was painting. The picture was beautiful! I am not sure about the Canon 50D. If you have a doubt, I would call Canon....
Apr 29, 2012 06:57:18 #
Photo One wrote:
I just watched a DVD last night on "Painting" The photographer left the camera on buld for 20 minutes while he was painting. The picture was beautiful! I am not sure about the Canon 50D. If you have a doubt, I would call Canon....
Wouldn't that have been a great big blur of him moving?
Apr 29, 2012 09:18:38 #
Good morning Jerry. No, as long as he didn't stay in one place he wouldn't be in the picture. When using the light to paint, he stayed out of the picture at all times.
Apr 29, 2012 12:10:22 #
Photo One wrote:
Good morning Jerry. No, as long as he didn't stay in one place he wouldn't be in the picture. When using the light to paint, he stayed out of the picture at all times.
Ah, yes. Even better. I've seen that before - nice if you can do it. Works best in dim light, I think.
Apr 29, 2012 12:18:51 #
Jerry, I have a picture that I did on film over 30 years ago with a 5 minute exposure. I'll see if I can find it so you can see it.
Kenny
Kenny
Apr 29, 2012 21:59:05 #
DaveJS
Loc: Philadelphia, PA area
Here is a link to a guy who paints with light and uses long exposures. He did a demo for the local camera club. He was using a med format camera and his shots were no more than 45 seconds and he was stacking many shots to get it just right.
http://www.haroldrossfineart.com/
http://www.haroldrossfineart.com/
Apr 29, 2012 22:31:43 #
Photo One wrote:
Do you mean he was doing an actual painting - as in using paint? Or was it painting with light?I just watched a DVD last night on "Painting" The photographer left the camera on buld for 20 minutes while he was painting. The picture was beautiful! I am not sure about the Canon 50D. If you have a doubt, I would call Canon....
Apr 29, 2012 22:34:22 #
Apr 29, 2012 22:36:08 #
I don't know about live view , I wouldn't think it would heat up in normal mode ( meaning without live view turned on )
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