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Thread started 15 Aug 2008 (Friday) 15:05
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Grainy High Res IMAGES help!

 
nickcreevy
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Aug 15, 2008 15:05 |  #1

I'm pretty new here found via google cos I've been having some issues with a couple of photographs I could do with some advice on fixing.

It goes like this, on my high resolution images when I zoom in 100% my images have alot of grainy-ness on them, here's some example images of zoomed out and zoomed in

IMAGE: http://i167.photobucket.com/albums/u148/ns3d/_MG_1005.jpg

IMAGE: http://i167.photobucket.com/albums/u148/ns3d/screen-capture-13.jpg

Is there some sort of post processing that can fix this issue, I'd really appreciate it if someone could hand me some sort of pointer or tutorial. Thanks!

:lol:
(if needed; I used a Canon EOS 400D Software; Adobe Photoshop CS3



  
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sadatk
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Aug 15, 2008 15:07 |  #2

I'm guessing you boosted the exposure in post processing? That's what probably brought out the noise in the underexposed areas.

I use noiseware.




  
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joedlh
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Aug 15, 2008 15:12 |  #3

In my experience, one frequently has some graininess at 100% magnification. It will be more apparent if you've done any sharpening, especially in dark and/or uniformly colored areas. I wouldn't get too obsessive about it.


Joe
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Editing ok

  
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nickcreevy
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Aug 15, 2008 15:16 |  #4

joedlh wrote in post #6114573 (external link)
In my experience, one frequently has some graininess at 100% magnification. It will be more apparent if you've done any sharpening, especially in dark and/or uniformly colored areas. I wouldn't get too obsessive about it.

Reason why it comes obsessive as it was my first shoot and I will be sending the model full res images on a CD, don't want to look "noobish" with grainy images :(




  
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JoYork
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Aug 15, 2008 15:35 |  #5

Give her a folder full of reduced size images for her to view on screen, and clearly mark the full-res one as "for printing only".


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Gatorboy
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Aug 15, 2008 15:41 |  #6

I take it you were using high ISO.

Just run it through Neat Image -- it will do wonders to grainy images.


Dave Hoffmann

  
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René ­ Damkot
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Aug 15, 2008 15:59 |  #7

Don't worry. It won't be bothersome in print....


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Tee ­ Why
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Aug 16, 2008 01:39 |  #8

Many programs like Canon's DPP and Lightroom have noise and purple fringing/CA reduction, so it may be worth a try there.


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PhotosGuy
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Aug 16, 2008 08:53 |  #9

# Exposure Time (1 / Shutter Speed) = 1/3200 second = 0.00031 second
# Lens F-Number/F-Stop = 7/5 = F1.4
# Exposure Program = aperture priority (3)
# ISO Speed Ratings = 200

First get off Av & use the right settings. You could have shot at 1/1600 sec ISO 100.
Second, the better the exposure, the less noise you will get.

Gavin shoots a lot at high ISO & provides fun captions as well. The first & many other images are at ISO Speed Ratings = 1600!
The week's sporting events in images...

For a good starting point, first set the f-stop & shutter speed you need. Then adjust the ISO.
Need an exposure crutch?

This shows how the subject can affect the exposure & why manual keeps me worry free:
Post #47


FrankC - 20D, RAW, Manual everything...
Classic Carz, Racing, Air Show, Flowers.
Find the light... A few Car Lighting Tips, and MOVE YOUR FEET!
Have you thought about making your own book? // Need an exposure crutch?
New Image Size Limits: Image must not exceed 1600 pixels on any side.

  
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Grainy High Res IMAGES help!
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