Long Exposure shots on the D40?

[epp_b]

with the remote, the sutter will stay open till you close it

....for up to 30 minutes. Trust me, I've tried it. It automatically closes the shutter after 30 minutes, no matter what.

Or, ya know, self-timer or the "mirror lock up" on some cameras that's really just a couple second delay.

You still have to hold down the shutter button if you want anything longer than 30 seconds, self timer or not. At least with the D40...

 

[keystervr6]

....for up to 30 minutes. Trust me, I've tried it. It automatically closes the shutter after 30 minutes, no matter what.

oh, reading > me ...i thought you said 30 seconds.....30 min, thats a long exposure :lmao:

 

[epp_b]

dont forgot though.. long exposures take a long time to process..

Only if you have noise reduction on.

 

[Garbz]

For a 30min exposure the NR should be off anyway. The thermal bleeding on the sensor is likely to give you a green image with NR such as the one in this picture here:
http://www.thephotoforum.com/forum/showthread.php?t=137164

The only real sane way to do really long exposures on standard DSLRs is image stacking.