| Author | Thread |
|
|
05/31/2007 01:56:37 AM · #1 |
Okay so tonight I was getting ready to take my paint with light shot and I set everything up to get ready. Took a few shots and went to the computer to check them out. UM HOLY CRAP...
Guess I won't be entering this challenge, UNLESS... someone knows how I can help get rid of it. BTW I cleaned the lens afterwards and it helped some but still bad.
This was a before the clean lens.
Any suggestions would help...
|
|
|
|
05/31/2007 02:00:01 AM · #2 |
| Oh snap thats pretty lol. |
|
|
|
05/31/2007 02:00:59 AM · #3 |
Originally posted by RainMotorsports:
Oh snap thats pretty lol. |
Yeah I should submit it as a firework image huh???
|
|
|
|
05/31/2007 02:21:35 AM · #4 |
What ISO are you using, and is this a 100% crop or full frame? Also, did you remove the lens cap? You must be shooting for the light painting challenge/ long exposure?
|
|
|
|
05/31/2007 02:42:53 AM · #5 |
Originally posted by MelonMusketeer:
What ISO are you using, and is this a 100% crop or full frame? Also, did you remove the lens cap? You must be shooting for the light painting challenge/ long exposure? |
ISO is set at 100 (lowest it will go) This is just a crop of the corner of my shot (yes it was the light challenge), and yes the lens cap was removed. Shutter time was I think 8"
|
|
|
|
05/31/2007 04:18:15 AM · #6 |
Has your camera long-exposure noise-reduction? If so, turn it off, these are not hot pixels, it probably is noise from ambient light
|
|
|
|
05/31/2007 04:49:09 AM · #7 |
Looks to me like pretty typical noise for an older camera for 8 seconds. Heck, you should see some of the newer cameras... The only real difference is that they are actually smearing it with heavy in-camera noise reduction.
You ever taken long exposures before? Don't worry too much about it. Slightly overexpose your shot and bring it down with levels to cut that stuff out. That stuff is going to be on top of your image. Alternatively you could take a 'cap on' shot and use it as a dark frame subtraction with some creative use of layers... Of course I don't think this is legal... not too sure as I've not looked at noise that bad for a long time.
Can you shoot RAW? Do you have any raw processing software? might be something you could do with that that might be legal...
Eyewave is correct. These are not hot pixels.
Might be worthwhile to do a test shot with the lens cap on just for reference. |
|
|
|
05/31/2007 01:48:28 PM · #8 |
Originally posted by eschelar:
Looks to me like pretty typical noise for an older camera for 8 seconds. Heck, you should see some of the newer cameras... The only real difference is that they are actually smearing it with heavy in-camera noise reduction.
You ever taken long exposures before? Don't worry too much about it. Slightly overexpose your shot and bring it down with levels to cut that stuff out. That stuff is going to be on top of your image. Alternatively you could take a 'cap on' shot and use it as a dark frame subtraction with some creative use of layers... Of course I don't think this is legal... not too sure as I've not looked at noise that bad for a long time.
Can you shoot RAW? Do you have any raw processing software? might be something you could do with that that might be legal...
Eyewave is correct. These are not hot pixels.
Might be worthwhile to do a test shot with the lens cap on just for reference. |
No I can't shoot in RAW. I can only shoot JPG and TIFF, well someother crap too but nothign good.
Yes I have taken night shots before with this camera but just recently I have noticed that it is worse.
Here was a god shot I did...
It has some noice but VERY little
Message edited by author 2007-05-31 13:49:03.
|
|
|
|
05/31/2007 08:51:59 PM · #9 |
noise in the original shot is a demonstration of the error rate of your camera's sensor. the shot you showed has content. the content added to the error rate shows minimal noise because the content overwhelms the errors.
do a search and read about shooting to the right to find out how the camera records information and understand better why the shadow noise shows up so much more. the noise is always there in one quantity according to what shows up in an equivalent iso/time dark frame, but content easily overwhelms it.
get your content strong enough that you can later use levels to cut off the bottom with all of the noise. |
|
|
|
05/31/2007 08:58:48 PM · #10 |
| oh yeah. shoot a cap on test shot with the same settings in tiff for really clear results. |
|
Home -
Challenges -
Community -
League -
Photos -
Cameras -
Lenses -
Learn -
Help -
Terms of Use -
Privacy -
Top ^
DPChallenge, and website content and design, Copyright © 2001-2026 Challenging Technologies, LLC.
All digital photo copyrights belong to the photographers and may not be used without permission.
Current Server Time: 01/01/2026 05:43:21 AM EST.
