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DPChallenge Forums >> Photography Discussion >> So how does one get exposure times above a minute?
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 03/04/2005 02:01:53 PM · #1
I have read in vaious places exposure times of above a minute more in the range of 5 mins or 10 mins. How does one get those kind of exposure times? I thought this is a spl feature of dSLRs so I read the spec sheet and 300d mentions a max exposure time of only 30secs. So how does one get higher time?
 03/04/2005 02:04:57 PM · #2
Originally posted by saurabhv:
I have read in vaious places exposure times of above a minute more in the range of 5 mins or 10 mins. How does one get those kind of exposure times? I thought this is a spl feature of dSLRs so I read the spec sheet and 300d mentions a max exposure time of only 30secs. So how does one get higher time?


The max exposure time is for Manual Metered Mode and/or Shutter Priority modes. Most dSLRs (and many higher end Point and shoots or "prosumers"), also have a "bulb" setting, which allows the shutter to simply be left open until you shut it again. There is sometimes a time-limit to this.. (the p&s/prosumers usually have one.. I believe the 300D's is 2 1/2 hours).

03/04/2005 02:05:31 PM · #3
By using "bulb", a feature where the shutter stays open as long as the button is pressed. Used in conjunction with a cable release, of course, and a tripod... The stated "maximum shutter speeds" are the longest the camera is programmed to allow with a single click of the shutter release, and are mostly relevant in terms of the flexibility the allow in metering in low-light situations.

Robt.

Message edited by author 2005-03-04 14:05:45.
 03/04/2005 02:05:57 PM · #4
on my canon I use a remote timer. It can do any exposure length and I can program in a sequence of shots. example: 5 photos, 45 seconds each exposure, and wait 5 seconds between shots.

there may be some type of software contol for your camera where you can control the exposure lengths and such

James
 03/04/2005 02:06:11 PM · #5
some cameras have a 'Bulb' setting. this will allow you to open the shutter for an indefinate amount of time. usually using a remote to open the shutter, and then later again to close it. the max shuter on the 300d is 30secs, but then you have the bulb option for longer exposures.

EDIT: quick to type you all are ;}



Message edited by author 2005-03-04 14:06:38.
 03/04/2005 02:07:19 PM · #6
Originally posted by Artyste:
Originally posted by saurabhv:
I have read in vaious places exposure times of above a minute more in the range of 5 mins or 10 mins. How does one get those kind of exposure times? I thought this is a spl feature of dSLRs so I read the spec sheet and 300d mentions a max exposure time of only 30secs. So how does one get higher time?


The max exposure time is for Manual Metered Mode and/or Shutter Priority modes. Most dSLRs (and many higher end Point and shoots or "prosumers"), also have a "bulb" setting, which allows the shutter to simply be left open until you shut it again. There is sometimes a time-limit to this.. (the p&s/prosumers usually have one.. I believe the 300D's is 2 1/2 hours).


I'm pretty sure the Bulb exposure time on the 10D & 300D is limited only by battery capacity.

03/04/2005 02:09:24 PM · #7
Originally posted by Spazmo99:
Originally posted by Artyste:
Originally posted by saurabhv:
I have read in vaious places exposure times of above a minute more in the range of 5 mins or 10 mins. How does one get those kind of exposure times? I thought this is a spl feature of dSLRs so I read the spec sheet and 300d mentions a max exposure time of only 30secs. So how does one get higher time?


The max exposure time is for Manual Metered Mode and/or Shutter Priority modes. Most dSLRs (and many higher end Point and shoots or "prosumers"), also have a "bulb" setting, which allows the shutter to simply be left open until you shut it again. There is sometimes a time-limit to this.. (the p&s/prosumers usually have one.. I believe the 300D's is 2 1/2 hours).


I'm pretty sure the Bulb exposure time on the 10D & 300D is limited only by battery capacity.


I'm not sure myself, I was only going by what I was told by someone, in the case of the bulb setting for the 300D. So if I'm mistaken, it's their fault. LOL
 03/04/2005 02:10:23 PM · #8
also another thing you can do is to stack or combine many images of 30 seconds each with special software to get a combined exposure of any length you want. Do a google search for registax, its free!!!

typically I do a few 2 minute exposures with a few shorter exposures of 15 seconds or 30 seconds plus a dark frame to elimanate much of the noise.

James
 03/04/2005 02:19:42 PM · #9
Originally posted by Artyste:
Originally posted by Spazmo99:
Originally posted by Artyste:
Originally posted by saurabhv:
I have read in vaious places exposure times of above a minute more in the range of 5 mins or 10 mins. How does one get those kind of exposure times? I thought this is a spl feature of dSLRs so I read the spec sheet and 300d mentions a max exposure time of only 30secs. So how does one get higher time?


The max exposure time is for Manual Metered Mode and/or Shutter Priority modes. Most dSLRs (and many higher end Point and shoots or "prosumers"), also have a "bulb" setting, which allows the shutter to simply be left open until you shut it again. There is sometimes a time-limit to this.. (the p&s/prosumers usually have one.. I believe the 300D's is 2 1/2 hours).


I'm pretty sure the Bulb exposure time on the 10D & 300D is limited only by battery capacity.


I'm not sure myself, I was only going by what I was told by someone, in the case of the bulb setting for the 300D. So if I'm mistaken, it's their fault. LOL


Probably the damned battery on the 300D is only good for 2.5 hours of sensor activity, hence the "limitation"...

Robt.
 03/04/2005 02:29:10 PM · #10
Whoa.... I was only gone for a few mins from my desk. thats a whole load of answers. OK, so this is what the bulb setting means. Thanks a lot. Will ask if I have more questions.

Just for info, which prosumers have this setting...if any of you guys have them?
 03/04/2005 02:31:15 PM · #11
Originally posted by saurabhv:
Whoa.... I was only gone for a few mins from my desk. thats a whole load of answers. OK, so this is what the bulb setting means. Thanks a lot. Will ask if I have more questions.

Just for info, which prosumers have this setting...if any of you guys have them?


Many of the prosumer cams do have a bulb setting; it's mostly the ones taht have a full manual mode. The camera review sites are a good place to research this. The best, IMO, is //www.dpreview.com
 03/04/2005 02:39:04 PM · #12
Originally posted by saurabhv:
Whoa.... I was only gone for a few mins from my desk. thats a whole load of answers. OK, so this is what the bulb setting means. Thanks a lot. Will ask if I have more questions.

Just for info, which prosumers have this setting...if any of you guys have them?


My camera, the Fuji s7000 has a "bulb" setting.. but it's limited to 15 seconds. LOL.. the maximum shutter speed in Manual mode is.. wait for it.. 15 seconds.

*SMACKS FOREHEAD*.

I can't believe they even put a bulb setting on the damn thing.
 03/04/2005 04:15:40 PM · #13
i've heard more like 4-5 hours battery life for the 300d.
would highly depend on the age of the battery, and the temperature though..


03/04/2005 04:19:02 PM · #14
Originally posted by jab119:
on my canon I use a remote timer. It can do any exposure length and I can program in a sequence of shots. example: 5 photos, 45 seconds each exposure, and wait 5 seconds between shots.

there may be some type of software contol for your camera where you can control the exposure lengths and such

James

Is there something like that for the D70?
 03/04/2005 04:29:14 PM · #15
kodchio: I think you can do it by connecting your camera to the computer and controlling it from Nikon Capture. (There are things you can buy to do it of course)
 03/04/2005 05:28:39 PM · #16
just to confirm...the 300d doesn't have a limit, just battery life. So adding a battery grip would inrease the time...or a power source.
 03/04/2005 05:37:22 PM · #17
Originally posted by deapee:
just to confirm...the 300d doesn't have a limit, just battery life. So adding a battery grip would inrease the time...or a power source.


the charger that came with my D60 has an adapter that looks like a battery with a cable comeing out of it. That cable plugs into the charger and the charger ino the wall.
I can run my D60 off wall power for however long I want. Do the 300D have the same option?

James
 03/04/2005 06:08:46 PM · #18
Originally posted by jab119:
Originally posted by deapee:
just to confirm...the 300d doesn't have a limit, just battery life. So adding a battery grip would inrease the time...or a power source.


the charger that came with my D60 has an adapter that looks like a battery with a cable comeing out of it. That cable plugs into the charger and the charger ino the wall.
I can run my D60 off wall power for however long I want. Do the 300D have the same option?

James


It doesn't come with one, but I would assume there HAS to be one available.
 03/04/2005 06:09:30 PM · #19
After reading about the Lost America guy and his 5-8 minute moonlight exposures I'm game to give it all a whirl.

I have to figure out if the Nikon D70 Remote can handle the "bulb" function cus I'm not gonna stand there for 5 minutes with my finger on the button.

Good luck.
 03/04/2005 06:13:57 PM · #20
my nikon 5700 (prosumer) has bulb, but it's limited to 5 minutes.
 03/04/2005 06:17:28 PM · #21
Originally posted by pawdrix:
After reading about the Lost America guy and his 5-8 minute moonlight exposures I'm game to give it all a whirl.

I have to figure out if the Nikon D70 Remote can handle the "bulb" function cus I'm not gonna stand there for 5 minutes with my finger on the button.

Good luck.


Yes - press once to open the shutter, press again to close.
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