Noisy images even with ISO 100?

Discussion in 'Canon Cameras' started by jacob.frankovic, Jan 3, 2018.

  1. jacob.frankovic

    jacob.frankovic TPF Noob!

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    Hey, I am using Canon EOS 80D. Everything is perfect with this camera, but I just think that the images are too noisy even at low iso. Examples will tell you more. What do you think about it? Am I doing any mistake or its just any bad setting applied? Thank you for your advices.

    Here is an example: 1/320; f 5,0; ISO 160; Lens: 18-135 IS USM 1.png


     
  2. Braineack

    Braineack Been spending a lot of time on here!

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    I see jpg compression, no noise.
     
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  3. Destin

    Destin Been spending a lot of time on here!

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    Agreed. There is no noise to speak of in that image.
     
  4. KmH

    KmH Helping photographers learn to fish Supporting Member

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    Uh.
    ISO 160 isn't ISO 100.
    ISO 160 is close to being 2/3 of a stop from ISO 100.

    Also the darker a part of the image is the less image data (light) each pixel gathers which makes the SNR (Signal to Noise Ratio) go down.
    Digital Camera Image Noise: Concept and Types
     
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  5. beagle100

    beagle100 No longer a newbie, moving up!

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  6. jaomul

    jaomul Been spending a lot of time on here!

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    Just be aware that if you underexposed a photo there likely will be more noise even at low iso, better to use iso 250 and get exposure good than 100 and be underexposed and then push to get the light right. This is more or less always true with jpegs. If you shoot raw you will not be penalised so much
     
  7. beagle100

    beagle100 No longer a newbie, moving up!

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    true, shooting in raw and processing will help with ISO 100 (or 250) jpg "noise"
    www.flickr.com/photos/mmirrorless
     
  8. 480sparky

    480sparky Chief Free Electron Relocator Supporting Member

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    The image you posted doesn't help since there's no context. Is it a 100% crop? 50%? 500%?

    What processing was done in post? What is the original image size? Any downsizing or resizing done?
     
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  9. john.margetts

    john.margetts No longer a newbie, moving up!

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    To me, it looks like an exercise in pixel peeping. If you blow any image up enough, you will see all sorts - soft image, pixels, fringing, artefacts, etc. You should be judging your images at the size they are intended to be viewed at, not magnified.
     
  10. lance70

    lance70 No longer a newbie, moving up!

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    I agree with the others, is this a 100% crop or what exactly are we looking at? I shoot with the 80D all the time and it does a good job in that department for a dx body. It's not going to compete with a full frame at higher ISO but this picture for instance I shot with the 80D at ISO 1000 in a poorly lit bar.



    25074987_1707821052602957_7665555377362436839_o.jpg
     
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