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Thread: Bulb Photography Without Cable Release Or Remote?

  1. #61
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    Default Re: Bulb Photography Without Cable Release Or Remote?

    Quote Originally Posted by fWord
    Heheh...I might have shouted, "Hey, WTF??!!"
    Wah...like that i think it'll break out to a fight liao
    Canon EOS 5D, 24-70 f/4 L IS, 50 f/1.2 L, 70-300 f/4-5.6 L IS, 600EX-RT. Sigma 12-24 f/4.5-5.6 EX.

  2. #62
    Moderator catchlights's Avatar
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    Default Re: Bulb Photography Without Cable Release Or Remote?

    Quote Originally Posted by duhduh83
    $10???? my EOS 5 cable release is selling at 50-60 plus!!! tell me if i got the wrong info or am i cheated....

    a standard type of mechanical cable release is only about $10.00, can EOS 5 use this?

  3. #63
    Moderator catchlights's Avatar
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    Default Re: Bulb Photography Without Cable Release Or Remote?

    Quote Originally Posted by catchlights
    if you open the shutter for 30mins exposure, you move your camera for second will make no effect on the image.
    Quote Originally Posted by duhduh83
    camera movement wont affect the image? why? i thought thats why we are using tripod? teach me....
    sec, 1 sec, 2 sec, 4 sec, 8 sec, 15 sec, 30 sec, 1min, 2 mins 4 mins, 8 mins, 15 mins, 30 mins, underexpose by 12 stops, do you think can register anything on film or sensor?

  4. #64

    Default Re: Bulb Photography Without Cable Release Or Remote?

    wow, this thread sure is popular...

    I haven't done any bulb photography before, so here's a question for the experts:
    How do you calculate the time needed for a bulb exposure? Also, what place in Singapore is dark enough to take star trails?

  5. #65
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    Default Re: Bulb Photography Without Cable Release Or Remote?

    Quote Originally Posted by seeyf
    wow, this thread sure is popular...

    I haven't done any bulb photography before, so here's a question for the experts:
    How do you calculate the time needed for a bulb exposure? Also, what place in Singapore is dark enough to take star trails?
    Usually bulb exposures are done experimentally given the condition. For example a simple shoot of a landscape can be as short as a few minutes to star trails at a few hours. The last one i did bulb exposures is at punggol point.
    Last edited by Snoweagle; 15th March 2006 at 12:10 AM.
    Canon EOS 5D, 24-70 f/4 L IS, 50 f/1.2 L, 70-300 f/4-5.6 L IS, 600EX-RT. Sigma 12-24 f/4.5-5.6 EX.

  6. #66

    Default Re: Bulb Photography Without Cable Release Or Remote?

    Quote Originally Posted by catchlights
    sec, 1 sec, 2 sec, 4 sec, 8 sec, 15 sec, 30 sec, 1min, 2 mins 4 mins, 8 mins, 15 mins, 30 mins, underexpose by 12 stops, do you think can register anything on film or sensor?
    get it
    thanks!!!

  7. #67
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    Default Re: Bulb Photography Without Cable Release Or Remote?

    Quote Originally Posted by Snoweagle
    Wah...like that i think it'll break out to a fight liao
    Whaha! Like that I'll run away first. Put everything in a big trash bag and then jump into the water and swim away.

  8. #68
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    Default Re: Bulb Photography Without Cable Release Or Remote?

    Quote Originally Posted by fWord
    Whaha! Like that I'll run away first. Put everything in a big trash bag and then jump into the water and swim away.
    But like that there's a chance where water will seep into the trash bag, even if it's tied tightly.
    Canon EOS 5D, 24-70 f/4 L IS, 50 f/1.2 L, 70-300 f/4-5.6 L IS, 600EX-RT. Sigma 12-24 f/4.5-5.6 EX.

  9. #69
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    Default Re: Bulb Photography Without Cable Release Or Remote?

    Quote Originally Posted by Snoweagle
    But like that there's a chance where water will seep into the trash bag, even if it's tied tightly.
    Yeah, true also. But better that than to have my head kicked in!

    Anyway, going back to film stuff. There's this thing called reciprocity failure when film is exposed for a longer time, such as beyond 1/3 seconds or so, causing film to become less sensitive and causing the final picture to be underexposed. Hence, it would seem that if my meter gives me a particular reading, I'll need to intentionally increase the exposure slightly to compensate. Do you have experience with this or know where I can get information on compensating for this issue with various films?

  10. #70
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    Default Re: Bulb Photography Without Cable Release Or Remote?

    Quote Originally Posted by fWord
    Yeah, true also. But better that than to have my head kicked in!

    Anyway, going back to film stuff. There's this thing called reciprocity failure when film is exposed for a longer time, such as beyond 1/3 seconds or so, causing film to become less sensitive and causing the final picture to be underexposed. Hence, it would seem that if my meter gives me a particular reading, I'll need to intentionally increase the exposure slightly to compensate. Do you have experience with this or know where I can get information on compensating for this issue with various films?
    Hmmm not sure about this though, but i think you can do a search on it. There should have some gd sites addressing this issue.
    Canon EOS 5D, 24-70 f/4 L IS, 50 f/1.2 L, 70-300 f/4-5.6 L IS, 600EX-RT. Sigma 12-24 f/4.5-5.6 EX.

  11. #71
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    Default Re: Bulb Photography Without Cable Release Or Remote?

    Quote Originally Posted by Snoweagle
    Hmmm not sure about this though, but i think you can do a search on it. There should have some gd sites addressing this issue.
    Thanks. Best would be the official websites of the producers of that particular type of film. Did a quick search yesterday but didn't come up with too much. I'm beginning to think that compensating for this problem is up to guesswork.

  12. #72
    Moderator catchlights's Avatar
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    Default Re: Bulb Photography Without Cable Release Or Remote?

    Quote Originally Posted by fWord
    Thanks. Best would be the official websites of the producers of that particular type of film. Did a quick search yesterday but didn't come up with too much. I'm beginning to think that compensating for this problem is up to guesswork.
    Yes, reciprocity failure not only for long exposure, it also apply on extreme short exposure, and multiple pop flash exposure, you can find the info from the official websites, and also on the data sheet of film which inside the package box, but mostly on Pro grade film.

  13. #73
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    Default Re: Bulb Photography Without Cable Release Or Remote?

    Quote Originally Posted by fWord
    Thanks. Best would be the official websites of the producers of that particular type of film. Did a quick search yesterday but didn't come up with too much. I'm beginning to think that compensating for this problem is up to guesswork.
    That's what i do too, i just estimate the exposure time and time it with my watch. Surprisingly it bears good results. U can also try photography books, some have very gd pointers.
    Canon EOS 5D, 24-70 f/4 L IS, 50 f/1.2 L, 70-300 f/4-5.6 L IS, 600EX-RT. Sigma 12-24 f/4.5-5.6 EX.

  14. #74

    Default Re: Bulb Photography Without Cable Release Or Remote?

    Quote Originally Posted by fWord
    Yeah, true also. But better that than to have my head kicked in!

    Anyway, going back to film stuff. There's this thing called reciprocity failure when film is exposed for a longer time, such as beyond 1/3 seconds or so, causing film to become less sensitive and causing the final picture to be underexposed. Hence, it would seem that if my meter gives me a particular reading, I'll need to intentionally increase the exposure slightly to compensate. Do you have experience with this or know where I can get information on compensating for this issue with various films?
    Here are some resources.

    This Kodak info only tells you the range of useable exposure time.
    http://www.silverprint.co.uk/PDF/e190.pdf

    These Fuji info gives a table on how much to compensate.
    http://www.silverprint.co.uk/PDF/NPZ800.pdf
    http://www.silverprint.co.uk/PDF/NPH400.pdf
    http://www.silverprint.co.uk/PDF/SuperiaReala.pdf

    They are taken from this website.
    http://www.silverprint.co.uk/colf5.html
    http://www.silverprint.co.uk/colf6.html
    http://www.silverprint.co.uk

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