Do not confuse Noise Reduction with Noise Filter .
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Page 89 of the manual, Custom Menu G has Noise Reduction and Noise Filter settings.
You're going to have to lay hands on an exposure one way or another. Don't be afraid to apply NR in the process. Even with just a copy of the screen JPG there's something that can be done to make something more of it (one interpretation, a little crude, but it was only a screen capture to work with after all):
Sure, I understand.
FWIW, Dfine has a feature that deals with banding (vert. or horz), if NR and banding is a common issue in one's work.
--You're going to have to lay hands on an exposure one way or another. Don't be afraid to apply NR in the process. Even with just a copy of the screen JPG there's something that can be done to make something more of it (one interpretation, a little crude, but it was only a screen capture to work with after all):
Sure, I understand.
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...Bob, NYC
http://www.bobtullis.com
"Well, sometimes the magic works. . . Sometimes, it doesn't." - Little Big Man
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--I haven't noticed banding with my GH2 having used both noise reduction on and off.
Even so by stacking and using suitable software you can get rid of it. I have used the in camera NR but you have to wait for the same exposure duration after each frame and I find dark frame subtraction is 'easier' in terms of workflow
Here is an original 60s exposure at 12800@300mm followed by a stack of 13 similar including this one, notice that the plane trails also disappear. These were done with dark frame and bias frame subtraction plus other stuff, I didn't have any light frames but will do so next time I do some stars
I do realise that I should have done these at iso 800 but I was just shooting at 12800 as an experiment hence the graininess. I took them from by back garden which has a good bit of light pollution
Out of curiosity have you any thoughts on hydrogen alpha sensitivity, I think the GH2 is pretty good as some of my orion images came out quite red and I managed to take some images last summer with even an IR850 filter attached. I'll have to hunt out some more Ha targets to test
edit memo to self, turn off predictive text in browser
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With LR4, you can see the Basic adjustments from the default 0 positions. Started with contrast, then toyed with shadows and black point, then whites. A bit of additional work was made with Curves for further darkening of the sky (could have skipped that). Ended up raising the exposure a little after all that. Also, I toyed with some individual colors in the HSL group that seemed to be a bit over the top after the previous work was done. But the meat of the changes were with the Basic group depicted.
