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avz10
Joined: 24 Jul 2009
Posts: 26
Location: Johannesburg, South Africa
PS Version: 7
OS: Windows XP SP2
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 Posted: Tue Jul 26, 2011 2:58 pm Post subject: Excessive grain/noise after editing in PS CS5 RAW |
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I have a Canon EOS 450D and started taking photos in RAW and edited the photos afterwards with the PS RAW editing function. Often, the result on the "RAW screen" is good enough and I do not open PS CS5.
The following happened (I edited nearly 100 photos like this, but printing them was a disaster!)
Image during editing in RAW:
Settings:
Setting under image in RAW:
Printing photo- a scan:
Watching the photo for the first time in PS:
What went wrong? Did I sharpen too much and if so, why did the picture still showed very nice on the "RAW" image?
The size of most of the photos are more than 10 MB.
I hope someone can help. |
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renata
Joined: 26 Nov 2010
Posts: 368
Location: Australia
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| Posted: Wed Jul 27, 2011 2:56 am Post subject: |
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Somebody will correct me if I'm wrong, but I seem to remember something about photos in Camera Raw not displaying the noise reduction accurately unless you have the image magnified by greater than 100%.
Try magnifying, say 200% and see if you see any difference? If it looks bad, try playing with that color noise reduction.
Best of luck! |
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renata
Joined: 26 Nov 2010
Posts: 368
Location: Australia
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| Posted: Wed Jul 27, 2011 3:18 am Post subject: |
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I just had a look in one of my books and found a couple of things which might (or might not!) be helpful.
It says that "A very high detail setting gives your image an almost textured look".
Another book recommends doing the noise reduction before you do the sharpening (perhaps you have already).
You could always reset an image to camera defaults and see how that prints? |
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thehermit
Joined: 05 Mar 2003
Posts: 3987
Location: Cheltenham, UK
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| Posted: Wed Jul 27, 2011 6:18 am Post subject: |
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It does look like you have ramped up the settings somewhat on many of the functions. Clarity, brightness and Vibrance are all pushed, some may be OK but in conjunction with the sharpening and the detail cause undesirable results.
If you have a facility to upload the RAW, I or others would be willing to have a look at it for you.
Perhaps one quick way to help you is to advise you to hold Alt, whilst adjusting Exposure and other settings to visualise the clipping points. Also as a general point of rule I would avoid all sharpening from within RAW and only carry out that function from within Photoshop.
_________________
If life serves you lemons, make lemonade! |
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jerryb4417
Joined: 20 Dec 2008
Posts: 710
Location: Oklahoma
PS Version: photoshop cs5
OS: win7 pro 64 bit, i7-3.2g, GTS 450,
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| Posted: Wed Jul 27, 2011 7:31 am Post subject: |
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hi,
when i look your "orginal view" in photoshop in the post...
in that one i see a lot of color noise... and downloading that and vieing in my ps , the blue channel is poor and noisy...
i am wondering if on the camera if the iso setting is too high...
i know for night time shooting.. that a common issue with all cameras to my knowledge.. if the iso setting too high you get a lot of color noise ///
if the setting not too high then could it be the firmware in the camera?
i did some looking around... and came across this aritcle that talks about
canon noise and what noise should look like in certain setting..
http://www.dpreview.com/reviews/CanonEOS450D/page20.asp |
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