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Why does the sky looks some kind of noisy?
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Why does the sky looks some kind of noisy?
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Click Here to view my aircraft photos at Airliners.netTags: None
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Hi Philipp,
It does look a bit underexposed to me also, I am not using my "screening" screen though. I also use a 350D and have found noise to be more evident on dark/under shots even at ISO 100. Having said that I am not convinced that the sky in the pic above is actually showing noise, it looks slightly "blocky" from compression IMHO.
Regards
Mark
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Originally posted by kukkudrillYes I agree that's jpeg compression. It's noticeable on some monitors more than others.
Yes, I also noticed that it depends on the screens. On the one I use, you see this "blocks" very clear.
Do you believe, it would help when I pay some much attention on the histogramms?
Philipp
P.S. Why is it actually neccesary, that JP has such an high compression. "The other site" has a almost no compression...
Click Here to view my aircraft photos at Planepictures.net
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It would be interesting to see the unprocessed original.
The LCD screen on the work Dell that I am on at the moment definitely shows a dark "mottling" above the horizon and below the upper edge of the pic, with an almost pinkish mottle through the middle area of the sky. I too thought it was .jpg compression effect and have had a similar problem myself in the past.
I've used several methods to get around it including the blur tool and lightening of the sky using both brightness and shadow/highlight tool. You've got to be VERY careful with the shadow/highlight tool to avoid creating a halo around adjoining edges.
Like I say, could we see the original ?If it 'ain't broken........ Don't try to mend it !
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Originally posted by phtr88P.S. Why is it actually neccesary, that JP has such an high compression. "The other site" has a almost no compression...
You might want to check first ....
Same photo here (347.71 KB):http://www.jetphotos.net/viewphoto.php?id=5785544
and on A.net (242.01 KB): http://www.airliners.net/open.file/1097938/L/
Gerardo
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Originally posted by phtr88Do you believe, it would help when I pay some much attention on the histogramms?
In the past I've tried to blur it away like Brian suggests but the result was to convert the random blotches into a wavy pattern almost like the contour lines on a map. Has this ever happened to anyone? Usually these days I simply make sure I avoid sharpening the sky and I leave it as is.
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Another method I've used in the past is to create a background layer, run a workflow on that and then erase the sky thus exposing the original, untouched sky. At this point I might also erase any jaggies that may have appeared before flattening the image and finally saving.
One of the beauties of using PS CS2 is that you can download a RAW image plugin from Adobe which is compatible with most of the current crop of digital cameras and with which you can do a fair bit of work before ever getting anywhere near a .jpg conversion. I've found CS2 to be a very powerful tool with this facility and has without doubt contributed to a recent ratio improvement in pictures accepted.If it 'ain't broken........ Don't try to mend it !
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Click Here to view my aircraft photos at Planepictures.net
Click Here to view my aircraft photos at Airliners.net
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