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Thread started 30 May 2013 (Thursday) 06:00
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7D noise issues

 
Circa ­ Soundtrack
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May 30, 2013 06:00 |  #1

Hi, i've posted about this before but i'm really starting to tear my hair out on this one.

When i zoom in on the background of this photo all i see is this disgusting graininess, and one certain detail on the face too, in particular on the teeth.

Am i going mad or is this normal on a correctly exposed ISO100 shot?

This was shot with a 7D with 50mm 1.4.

IMAGE: http://farm6.staticflickr.com/5329/8888723259_d83c1c36cb_b.jpg



  
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TeamSpeed
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May 30, 2013 06:12 |  #2

  • Is this a out-of-camera JPG or raw?
  • If a raw, what steps did you take to finally generate the JPG?
  • Did you post process the JPG and what did you do?
  • If you shot as a JPG only, what picture style settings did you have defined?


I ask these questions because if you raise brightness up after the fact either on the raw or JPG, you will create noise. If you sharpen this, the noise effect will be amplified.

What is the exif here too? Did you actually shoot at f1.4? If so, then your DOF is very thin, and you won't have full head detail, but just a small sliver. You would be better service shooting at f4, for example, at ISO 400, with EC set to +1/3, IMO.

Now, if what you mean by noise and graininess, you mean the strange patterns of the background, that is called bokeh, and the 50 1.4 is not known for rendering smooth out of focus areas, its bokeh is a bit twitchy as you can see. So if that is what you are talking about, that is all a result of your lens, and not your camera. Based on what I read from your other thread, I don't think you mean noise in the conventional sense, but rather the bokeh and chromatic effects of the lens. You mentioned in the other thread about how you use smaller aperture numbers, you start to get effects around edges of subjects, etc and based on your picture above, you really mean the background rendering. Again, if that is what you are trying to get across, that is all on the 50 1.4 lens. It is one of the reasons I no longer shoot with it, along with its AF internal design that fails easily.

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Woolburr
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May 30, 2013 06:26 |  #3

This is noise.....if your image looks like this....you have problems.

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Orogeny
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May 30, 2013 07:10 |  #4

Circa Soundtrack wrote in post #15981885 (external link)
When i zoom in on the background of this photo all i see is this disgusting graininess, and one certain detail on the face too, in particular on the teeth.

Quit zooming in on the background.;)


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hollis_f
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May 30, 2013 07:17 |  #5

Orogeny wrote in post #15981988 (external link)
Quit zooming in on the background.;)

Instead, print your image 5 foot wide then examine the print with a magnifying glass. It has the same effect, but it's so obviously stupid that you'll only do it the once.


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JCH77Yanks
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May 30, 2013 09:39 |  #6

Woolburr wrote in post #15981917 (external link)
This is noise.....if your image looks like this....you have problems.
QUOTED IMAGE

Agreed. That is noise. The "noise" most complain about nowadays is at magnified views. I honestly don't care about today's noise, I'd rather have a sharp image than a blotchy, noise-reduced mess.


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Circa ­ Soundtrack
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May 30, 2013 09:46 |  #7

TeamSpeed wrote in post #15981898 (external link)
  • Is this a out-of-camera JPG or raw?
  • If a raw, what steps did you take to finally generate the JPG?
  • Did you post process the JPG and what did you do?
  • If you shot as a JPG only, what picture style settings did you have defined?


I ask these questions because if you raise brightness up after the fact either on the raw or JPG, you will create noise. If you sharpen this, the noise effect will be amplified.

What is the exif here too? Did you actually shoot at f1.4? If so, then your DOF is very thin, and you won't have full head detail, but just a small sliver. You would be better service shooting at f4, for example, at ISO 400, with EC set to +1/3, IMO.

Now, if what you mean by noise and graininess, you mean the strange patterns of the background, that is called bokeh, and the 50 1.4 is not known for rendering smooth out of focus areas, its bokeh is a bit twitchy as you can see. So if that is what you are talking about, that is all a result of your lens, and not your camera. Based on what I read from your other thread, I don't think you mean noise in the conventional sense, but rather the bokeh and chromatic effects of the lens. You mentioned in the other thread about how you use smaller aperture numbers, you start to get effects around edges of subjects, etc and based on your picture above, you really mean the background rendering. Again, if that is what you are trying to get across, that is all on the 50 1.4 lens. It is one of the reasons I no longer shoot with it, along with its AF internal design that fails easily.

Shot in Raw.
Uploaded raw into Lightroom and exported as JPEG.
All i did in post processing was a little bit of colour alteration. The noise was present before.

I'm quite aware about the Bokeh, my problem is the graininess present in the whole photo and all of my photos even when exposed correctly on low ISO's like this one was. I took on board what advice i got in the other thread but it hasn't fixed my problem at all.




  
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palamedes
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May 30, 2013 09:46 |  #8

Circa Soundtrack wrote in post #15981885 (external link)
Hi, i've posted about this before but i'm really starting to tear my hair out on this one.
QUOTED IMAGE

I see no noise.. That's a good looking image to me.. Can you circle what you're talking about?




  
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TeamSpeed
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May 30, 2013 10:33 |  #9

So no sliders up and down in LR regarding exposure?

We need to see a 100% crop, so just go to your JPG, and lasso a small section roughly 800x800, crop it, and save as a new image, then upload to your reply.

This image looks a bit dark, but underexposure itself doesn't create the noise until you really bring the exposure back up digitally, which will then bring out the noise. If you did nothing but altered saturation/tone, and nothing else, then I am not sure why you would have noise at ISO 100. I have noiseless samples at ISO 400 from yesterday's shoot at the softball games, for example. I don't start to see noise until around ISO 800, and even then, it is very light.

As to your detail issue, that is all about your DOF and whether your gear is front or back focusing. You might have to MFA your lens, and then also make sure your aperture is small enough to get a full body inside the DOF.


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xzoup
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May 30, 2013 10:49 |  #10

The back ground does look a little disturbing maybe changing the aperture a stop might help. The guy looks ok, or take out that large patch of dark greeen to the right of the guy would help a lot.




  
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gjl711
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May 30, 2013 10:52 |  #11

As mentioned, 100% crops would help but looking over the pic, it seems that the sharpness might be a bit too aggressive. That would tend to highlight noise as well, even at low ISO.


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Tommy1957
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May 30, 2013 10:55 |  #12

This is off a 60D at ISO 6400. I shot jpg and did some EC and CA removal. No noise modification besides in-camera Standard high-ISO noise removal. If I pixel-peep it looks like warmed-over crap. His mom is happy to have a nice shot of his last grade-school band concert. Stop pixel-peeping.

EDIT: It was also shot with a lens most people consider crap: 70-210 f/3.5-4.5 @ 210mm and f/5.6.




  
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2n10
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May 30, 2013 10:58 |  #13

Tommy1957 wrote in post #15982543 (external link)
This is off a 60D at ISO 6400. I shot jpg and did some EC and CA removal. No noise modification besides in-camera Standard high-ISO noise removal. If I pixel-peep it looks like warmed-over crap. His mom is happy to have a nice shot of his last grade-school band concert. Stop pixel-peeping.

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skycolt
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May 30, 2013 11:56 |  #14

Agreed to many people above. That photo looks very well


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kipliq
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May 30, 2013 12:09 |  #15

I agree with Teamspeed and Read through TS posts about post processing. I think everyone that is trying to help needs shot of the noise your referring to at 100% crop. Are you pixel peeping? Every camera will give you noise.


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7D noise issues
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