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DPChallenge Forums >> Individual Photograph Discussion >> Northern Lights
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 06/08/2005 02:39:50 PM · #1
I took these pictures a long time ago with my little Canon Powershot A70. I (for the moment) have no noise reducing program, so I ran the despeckle filter twice on each picture which helped, but not a lot. I've got Photoshop 7

I'm hoping to get more information on both taking the picture-

Anything I can do with my little PnS to improve the picture? composition? Any tips or tricks on how to shoot northern lights or night skies?

and post processing-

besides noise reduction, what else can I do? More color? Channel mixer? Hue/saturation?

Any comments and HELP are welcome!
Thank you in advance


Cheers
Pidge

Message edited by author 2005-06-08 14:40:09.
 06/08/2005 02:42:31 PM · #2
I love the second (at least when I started posting it was second) one for the colours and the zoom effect. Unfortunately, when you increase the ISO or do lengthy exposures you run into the problem of noise though it's not too bad in the images you posted. The despeckle seems to have worked.
 06/08/2005 02:46:59 PM · #3
You can use a trial version of Neatimage that may help with the noise. Noise ninja is another program that people use for noise reduction. Failing that you could play around with gaussian blur layers.

Other than the noise I dont see any other need to change the images. They look fine as is.
 06/08/2005 02:59:36 PM · #4
Here is the second one ran through nosieware and with a +20 on Sat. and about -15 on Brightness and unsharp mask applied.

06/08/2005 03:06:12 PM · #5
Getting rid of the noise makes a huge difference. Thanks J_Ehrat. Gotta go research noise reducing software now

Cheers
pidge
 06/08/2005 03:13:07 PM · #6


Here is the 3rd pic. Noticed the second time that you will want to do the editing first before appling the nosie filter. About the same edits on this one. auto levels, got a little too bright so bumped down in brightness on brightness/contrast about -10. Used the different color channels in Hue/Sat. to bring out a bit more color, and applied unsharp mask filter. then ran through Nosieware. Hope you like.
 06/08/2005 03:25:09 PM · #7
What I would do is:

- Reduce the ISO to 200
- Take four shots in succession
- Take a black frame and subtract it from each shot, or enable dark frame subtraction in-camera if it is available, to reduce fixed noise
- Layer the four shots in PS to reduce random noise

Using the above technique, the amount of visible noise will be reduced to well under half of what you're currently seeing. Post-processing with Noiseware, NeatImage, or Noise Ninja is probably still going to be desirable. Do this as a last step, after images are stacked, and use a profile based on the final image (mot a canned camera profile).

06/08/2005 10:03:29 PM · #8
Ok, I've run thru neat image... I think it's better. Thanks for the suggestions
I didn't want to do it to much or it gets plasticy looking...



Original:



Cheers
Kirbic, did you get my PM?

Edit: gotta learn to type properly.

Message edited by author 2005-06-08 22:04:44.
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