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Noisy pics!
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HELP! I have tried a couple of things (sharpening and reducing noise) with this pic but I just seem to make it worse. The clouds are really bad, does anybody know what I’m doing wrong?
Hi Andrew33,
I hope this dosen’t sound like a smart alec reply but
I can’t really see any clouds.John.
The whole sky is overcast but the lighter coloured cloud is very bright. Maybe pic is overexposed, I really don’t know.
It’s hard to see any digital noise in those images.
The sky looks pixelated on the monitor I am using here. If the photos were taken in JPG format and subsequently over-processed in whatever editing application you use then this could cause some undesirable effects.
Might be worthwhile posting some additional technical details… camera make/model, image settings (specifically ISO setting and image type JPG/RAW), what image editting app you used and what post processing was applied.
You’re right NFL, its over pixellated, I thought thats what “noise” was, you can also see a mottling effect on underside of rear “wing”.
Camera is a Canon Powershot,
JPG
F-stop f/2.6
exposure 1/400 sec
ISO 80
exposure bias +1I’m using Photafiltre or Paint.net for processing.
Well… if the sky was pixellated prior to post processing then it’s possible that there’s something up with the camera.
If the sky was reasonably fine prior to post processing and then pixelleted after your post processing then it’s probably that you are processing the JPG too harshly.
If you camera allows you to shoot in RAW you should give it a try. The files are larger but there’s much more scope for better results via post processing.
J
I would suspect that when you took the photographs that you probably set your jpg compression to a low quality setting. When you downloaded this to your computer and did some processing on it and resaved as a jpg you will add further noise to your picture.
Check your camera settings and see what size and quality you have it at and remember that the less photos you can fit on your card then the better quality picture you will get. You had the ISO set at 80 and this should give you a good result but you had the pixels at 1600 x 1200 which is relatively small and if you had the jpg compression set to low then you will get noisy or grainy pictures when you start enlarging.
It probably has on the menu ‘normal’, ‘fine’, or ‘superfine’. Scroll through these and watch how the capacity of the card goes up and down and then do the same with the picture size ‘large’, ‘medium’ or ‘small’ and see the same effect on the number of pictures you can take. Photographing with the camera set at ‘large’ and ‘superfine’ will give you far fewer photographs on your memory card than setting the camera at ‘small’ and ‘normal’ but your picture quality will be far superior.David
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