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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 09 Jun 2013 (Sunday) 21:50
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Grainy pics from 80-200L

 
dansmail26
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Jun 09, 2013 21:50 |  #1

Sorry - it's a 70-200 f4l -

Help - what can I do to stop getting such grainy pics from my 'new' used lens?
Here's todays pic. If you hit the magnifying glass at the top you will see the pic enlarged.
Thanks in advance for the advice!
http://365project.org/​debihas27/365/2013-06-09 (external link)


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TeamSpeed
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Jun 09, 2013 22:01 |  #2

Grain is not from your lens but rather from your exposure and how you post process it. Make sure you nail exposure, or even push the histogram to the right, then post process. I am quite sure your results will be better. :)


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jra
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Jun 10, 2013 00:38 |  #3

I agree.....grain (or noise) is not caused by a lens. It has far more to do with the camera, ISO setting, exposure and post processing.




  
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Neilyb
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Jun 10, 2013 04:55 |  #4

Of course if the lens is soft and you are sharpening your shots to compensate you are also sharpening the noise (unless you are are masking stuff). But yeh, your ISO is too high.


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Jun 10, 2013 05:40 |  #5

Neilyb wrote in post #16016121 (external link)
Of course if the lens is soft and you are sharpening your shots to compensate you are also sharpening the noise (unless you are are masking stuff). But yeh, your ISO is too high.

uh... iso 100 is too high?


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Neilyb
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Jun 10, 2013 06:44 |  #6

Talley wrote in post #16016160 (external link)
uh... iso 100 is too high?

Was not looking at Exif but those shots are really grainy and very compressed, so it is hard to tell. I am guessing a large crop due to the loss of detail too.


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Jun 10, 2013 06:46 |  #7

How do you know it is 100?


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Jun 10, 2013 06:47 |  #8

Neilyb wrote in post #16016236 (external link)
Was not looking at Exif but those shots are really grainy and very compressed, so it is hard to tell. I am guessing a large crop due to the loss of detail too.

Thank is what I think as well.


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kin2son
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Jun 10, 2013 06:48 |  #9
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digital paradise wrote in post #16016239 (external link)
How do you know it is 100?

EXIF -> Click info on the right.


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Jun 10, 2013 07:21 |  #10

Thanks. Image size is 2087 x 1901. Wonder if that site is causing a problem resizing which is compounding some of the above mentioned items.


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Jun 10, 2013 08:55 |  #11

Talley wrote in post #16016160 (external link)
uh... iso 100 is too high?

ISO 100 means nothing if the image was underexposed originally by a stop or two, then digitally brought back up afterwards. I think it best to see what the poster did with the image after it was taken for us to determine what exactly the issue is. I don't see how the lens is to blame for the noise and blotches though. It really looks as if this was originally underexposed, then adjusted, then post processed, and then JPG compression for the final save and submit.


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Jun 10, 2013 08:59 |  #12

We don't know what PP software was used either but I have seen something like this due to incorrect settings in the past. More info would certainly. Full sized raw would be best.


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Jun 10, 2013 09:18 |  #13

Not that it should create a grainy pic, but he also has a 1.4 TC on here as well.


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Mavgirl
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Jun 10, 2013 09:29 as a reply to  @ carpenter's post |  #14

Some lenses do actually have a gritty look to them that resembles noise but it's usually older cheap glass and you only really see it when you pixel peep. But that doesn't look like what's going on here. What was done in processing? How much is the cropped in? How much did you sharpen it? What else did you do in processing? How much does the hosting site optimize the image? And lastly ISO 100 does not mean noise free.


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Jun 10, 2013 09:30 |  #15

carpenter wrote in post #16016653 (external link)
Not that it should create a grainy pic, but he also has a 1.4 TC on here as well.

I have shot with a 1.4 lots of times. It only causes a bit of CA if you look very hard for it.


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Grainy pics from 80-200L
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