7 Minute Exposure - DPChallenge Forums

10/30/2003 10:33:42 PM · #1

This is a 7 minute exposure. I want to go back to this spot a little earlier so I can catch a bit of color in the sky. This is facing due west...

utopian mang

Canon PowerShot A80

10/30/2003 10:37:32 PM · #2

Very nice. I love the sharpness and contrast in colors of the the pic. Great stuff!

Canon EF 24-105mm f/4.0L IS

10/30/2003 10:39:36 PM · #3

Nice shot John, but as you know I'm fond of those long exposures ;)

If I get a chance to take some time off work tonight, I may give a 20 or 30 min exposure a try. I'm curious to see how much noise and how many hot pixels are produced. My only worry is that the camera might get too cold, you know, Minnesota and all. I suppose I could wrap it up in a blanket or something, just to keep the windchill off of it.

*Quadrajet heads to work with visions of star trails dancing in his head*

LoveCriesHate

Nikon D70

10/30/2003 10:44:50 PM · #4

hey dude , thats an awesome picture, i love long exposures!
i think that they are really cool, i wanted to try to do some action ones sometime, like with a tennis player or something...?

Natator

Canon EOS-5D

10/30/2003 10:45:04 PM · #5

What aperture was that at John?

I've never managed to get a really long exposure without things like the road becoming more exposed than I would have liked. I may have been trying in areas with too much ambient light maybe.

10/30/2003 10:45:08 PM · #6

There may be a few hot pixels in this one but i'm not sure if it's that or if they are lights in the distance. At any rate, they can be cloned out if necessary :)

Canon RF 24-70mm f/2.8 L IS

10/30/2003 10:47:37 PM · #7

Originally posted by natator:

f/22
ISO 100
419"
28-105 canon f/3.5-4.5 USM lens
tripod, of course :)

kirbic

Canon EOS R5

10/30/2003 10:54:40 PM · #8

Here's a 4-minute exposure from back in August. Taken well after sunset, it was really quite dark, with just a hint of light in the west. the streak is an aircraft.
Taken with a Tamron 19-35mm lens @ 19mm, F5.6, ISO 100.
No noise reduction or dark subtraction. there are some hot pixels creeping in, but they don't show too much on the 640 version.

10/30/2003 11:04:34 PM · #9

Originally posted by jmsetzler:

This is a 7 minute exposure. I want to go back to this spot a little earlier so I can catch a bit of color in the sky. This is facing due west...

This is really nice, I like it. You should try a 15 or 30 min in the same spot with the same conditions if you want color in the sky.

I miss having long exposure capability with my G5, the longest I can get is 30sec.

I made a 3 hour exposure in a garage with my 4x5 once. After some special film developing techniques, I was able to make a straight B&W print that had detail inside a cylinder of an engine block in a dark corner and the writing on the flourescent tube was readable. Thing had detail over something like a 15 stop range. Of course, digital cameras don't have reciprocity failure like film does.

10/30/2003 11:08:47 PM · #10

I suppose this would be a good thread to again mention this (almost) 9 minute exposure I made last spring. I was suprised how long the star trails were in this shot...ah yes and the wind generators in the image happened to be off at the time. ;)

Yes, there is some noise in the dark parts of the sky (visible on the full res version), but for the most part it's a fairly clean image. I suppose should really try to use neat image on it.

Gordon

RIM BlackBerry Curve

Canon EF 85mm f/1.8 USM

10/31/2003 08:53:03 AM · #11

Biggest problem I found with long exposures with my D60 was the battery heat showing up after about 5 minutes. I'd been shooting for about an hour fairly continuously by that point though.

This was a 6 minute exposure, with flash:

Canon EF 24-70mm f/2.8L USM

10/31/2003 09:00:37 AM · #12

Since my camera is limited to a maximum exposure of 30s and I know other cameras have similar limitations, I was wondering if anyone has tried "stacking" multiple exposures of 30 sec or less to effectively achieve long exposures. I think I'm going to try one or two this weekend.

birgir

Canon EOS-10D

10/31/2003 09:10:45 AM · #13

One question from me ... what do you people do while you wait for the picture to finish? Do you read? :)

Gordon

RIM BlackBerry Curve

Canon EF 85mm f/1.8 USM

10/31/2003 09:17:32 AM · #14

Originally posted by birgir:

One question from me ... what do you people do while you wait for the picture to finish? Do you read? :)

There were some people watching the sunset and playing guitar when I took my shots - we just talked :)

10/31/2003 09:34:17 AM · #15

Originally posted by birgir:

One question from me ... what do you people do while you wait for the picture to finish? Do you read? :)

I'm usually by myself when I shoot these. I just enjoy the silence and solitude of the night. Reading requires a light and at long exposures like this, even the light from a small reading lamp could impact the resulting image.

10/31/2003 09:41:54 AM · #16

Originally posted by birgir:

One question from me ... what do you people do while you wait for the picture to finish? Do you read? :)

When I made a 3hour exposure in a garage, I went back in the house and played cards 'til the exposure was done.

10/31/2003 12:08:27 PM · #17

Originally posted by Spazmo99:

Originally posted by birgir:
One question from me ... what do you people do while you wait for the picture to finish? Do you read? :)

When I made a 3hour exposure in a garage, I went back in the house and played cards 'til the exposure was done.

Ahhh the joys of film. I knew there was a reason I still have a film body. :)

10/31/2003 12:16:12 PM · #18

Actually, for the 3hr exposure, I used a 4x5 view camera. Reciprocity failure is a big pain with film.

Message edited by author 2003-10-31 12:17:40.

A Weaver

Sony DSLR-A100

10/31/2003 04:33:09 PM · #19

7 minute exposure???? Wow, My camera only has a 30 second exposure. Thats it, Im going to sell my Mustang and buy a $15,000 dollar camera. LOL.

11/01/2003 07:39:46 PM · #20

I went back to this spot again tonight...

f/22
180 seconds
iso 100