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Canon EOS 40D
Canon EOS 40D
B
HQ Grade: B
A is outstanding and exceptional, rated in the top 10% of digital cameras.
B means they are good, with some standout features.
C means they are mediocre, and probably more trouble than they are worth.
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  • 4 out of 5
"Canon 40d"
  • 4 out of 5
"Awesome"
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Question Answered!
Pankaj Sharma (Pankaj31) 0 pts
October 21, 2007 11:56 PM
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What is the long exposure time the bulb time max

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Answers This question has been answered!
by James DeRuvo (byjamesderuvo) 58449 pts
October 24, 2007 1:15 PM
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Well that's the beauty of BULB. It stays open as long as you depress the shutter. There is no real time limit. It closes when you release the shutter button. There are some shutter controllers that allow you to set times (Model TC-80N3 is one). They're good for astrophotography.
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Pankaj Sharma (Pankaj31) 0 pts
October 25, 2007 10:41 PM
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Hi
Thanks
I am cleared with this , Yes I do Astrophotography , i am a Astronomer , my next question is now which digital camera holds the shutter open for maximum time automatically. not expensive and best.
Pankaj Sharma
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by James DeRuvo (byjamesderuvo) 58449 pts
October 26, 2007 1:34 PM
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Like I said, it's a manual function. To do it automatically, you need to get the optional shutter controller that will allow you to preset the time.
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Pankaj Sharma (Pankaj31) 0 pts
October 27, 2007 2:48 PM
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thanks

ok then which digital camera have the maximum preset the time for long exposure photography.
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by James DeRuvo (byjamesderuvo) 58449 pts
October 29, 2007 2:18 PM
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Pankaj, you can't preset a bulb setting that I know of. It's purely manual. The only way you can is to get the optional shutter controller which will trigger the shutter to open, and then trigger it to close after the preset time has expired. I can't put it any plainer. good luck.
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Pankaj Sharma (Pankaj31) 0 pts
November 5, 2007 12:54 PM
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thanks Mr James De Ruvo

Now I do Night Photography of stars in no lights this is astrophotography and i am searching a good camera for this kind of photography what is ur suggestion a digital not very expensive .
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by James DeRuvo (byjamesderuvo) 58449 pts
November 5, 2007 1:23 PM
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Well the 40D will certainly do the trick. So will the XTi Digital Rebel (400D). Also recommend the Nikon D40 or D80 (could they make that any more confusing?) You'll probably need a T mount to connect it to your telescope.
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photographer 0 pts
August 17, 2008 3:44 AM
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i have a canon 450d. i dont know how to have a bulb exposure photo. please help me. please!!!
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Michael S. Acquesta (macquesta) 94 pts
August 22, 2008 4:28 PM
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The 40D has a long exposure setting of 30 seconds. That is the max you can use without going to the bulb setting or buying one of the add-on timed shutter releases. The Canon Model TC-80N3 will allow an exposure for 99 hours 59 minutes 59 seconds.
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Robb Salzmann 0 pts
August 26, 2008 7:57 AM
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Pankaj,

OLympus DSLR's will do this as well, up to 30 seconds.

Best wishes with your choice.
Robb
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:) 0 pts
November 14, 2008 11:46 AM
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Hey (;

What is bulb exposure?
Thanks!
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Richard Muise 0 pts
September 11, 2009 3:36 PM
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According to Canon, the limitation in the bulb length would be the batteries. The camera is continuously on during an exposure. They claim (here: http://www.usa.canon.com/uploadedimages/FCK/Image/White%20Papers/EOS_40D_WP.pdf) that with a fully-charged Battery Pack BP-511A, a bulb exposure can be as long as about 2.5 hours.

-r
http://myredbmw.net
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