Does it cause more noise??

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McNyat

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Ciaran
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Might be a silly question but does shooting in continuous mode (as opposed to single shoots) cause more noise to be evident in photos?
 
It wont cause more noise on a 550D, but I believe some cameras will automatically reduce the amount of in camera noise reduction to ensure that the continuous shooting rate is not affected.
 
Strangways said:
It wont cause more noise on a 550D, but I believe some cameras will automatically reduce the amount of in camera noise reduction to ensure that the continuous shooting rate is not affected.
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That's interesting because I'm asking about shots taken with a 7D on rapid continuous burst mode. Would this mean more noise in these pics?
 
If you have "High ISO Noise Reduction" set the camera processes the JPG to reduce now after each shot at a high ISO. This takes time and the higher the level set the longer it takes.
This added processing time means burst mode is slow as its got to do more to each photo before its ready for the next.
It doesn't mean there is more noise in the pictures though - its simply a fixed reduction for the base noise level and is user selectable.
 
McNyat said:
That's interesting because I'm asking about shots taken with a 7D on rapid continuous burst mode. Would this mean more noise in these pics?
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If it is set at auto ISO then I guess it may increase the ISO and therefore generate more noise. If you have set the ISO manually then I would expect the 7D to slow down the continuous shooting rate to allow the selected noise correction to take place in the camera and therefore be the same as a single shot.
 
One thing that generates more noise than anything else is under-exposure.
 
Thanks Richard. One other thing...... Does increasing the noise reduction settings reduce the overall quality or sharpness of the shots?
 
Noise reduction generally reduces the sharpness, but quality is more of a personal thing. Noisy and sharp or noise less and soft is a personal preference and will probably depend on the image.
 
McNyat said:
Thanks Richard. One other thing...... Does increasing the noise reduction settings reduce the overall quality or sharpness of the shots?
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Yes. Many noise reduction methods are very good these days and can do a lot without too much impact, but underlying all the cleverness is a large part of the process involves blurring the speckles of noise to hide them.

If you push the ISO too far, you not only get noise but also loss of dynamic range - dark shadows tend to go grey instead of black and images lack punch.

Basically you'll always get best image quality at lowest ISO, by avoiding under-exposure, and using minimal noise reduction.

Edit: crossed post with Gordon.
 
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