Questions tagged [noise]
Image perturbation caused by electronic transformation and processing.
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How does double Native ISO function?
My question are based on two things.
SNR can be modeled by the poisson distribution and with increasing illuminance, noise increases (shot noise) but so does the SNR.
Cinema camera sensors have a ...
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Why could using a low ISO setting be bad?
My question is based on ISO and regarding grain. So when taking a photo with high iso normally you would get grain. To combat this you would normally just simply lower the iso, but I've seen and heard ...
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At what point is bit depth redundant in photography/cinematography?
When thinking of pixel (physical) resolution, I imagine the pixel count as sampling the spatial variations in luminance across the scene. More pixels, the greater ability to sample the undulating ...
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Benefit of larger photosites
I often read that larger photosites have better SNR performance. However, from further reading and test footage I have seen. It seems that, as many people also rightfully point out, it has more to do ...
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How much noise does Getty Images tolerate for a contributor application?
I captured some decently pleasing pictures (when zoomed out) using Canon M50 + kit lens during the time of sunset. The image, when not zoomed in 100% looks well, but when zoomed in 100%, it looks ...
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Wrapping my head around the signal to noise ratio
To my knowledge the signal to noise ratio when talking about shot noise, is defined as the mean signal divided by the standard deviation. In the Poisson distribution, which can be used to model shot ...
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Unusable image R5 iso 1000
So since I bought my R5, I cannot have good images in certain conditions. Here is an example.
Original image link
Iso 1000, F4, 1/200
This picture is unusable. The picture is really noisy for a 1000 ...
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3
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Phenomenon where a repeating pattern on a photo is colorized in alternating stripes [duplicate]
What is the name of the phenomenon where a repeating pattern on a photo is colorized in alternating stripes, like this?
In addition, does leading software like Photoshop and Lightroom have ...
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Why does a lens profile on Lightroom produce such noise artifacts?
I've recently switched to a new system (Canon R5 + Canon RF 24-70mm f/2.8L) and I'm experiencing some unexpected noise artifacts when I apply lens profile corrections in Lightroom Classic CC (v12.2).
...
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noise in the intensity values has standard deviation of 2 gray levels -- what does that mean?
I am working on digital image correlation and want to figure out the noise in my data.
In a book, I read "many digital cameras record intensity values using 8 bits with Gaussian noise in the ...
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What is the source of color noise?
Many articles mention color (chroma) noise. However, I cannot find proper information what is the cause of this kind of noise.
It looks quite different than the luminance noise, so for this reason I ...
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Why does Google Pixel 6's camera add some artefact when using `.7x`?
Example of artefact using the native camera application with .7x:
Camera with 1x shows no such artefact:
...
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3
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Low light, indoor gig photography without pumping that ISO?
I've got a Canon EOS4000D and regularly shoot photography for my wife's church. I use a Tamron SP 24-70mm F/2.8 Di VC USD G2 and a Sigma 50-200 f/4-5.6 dc os hsm.
The problem I'm having is it's quite ...
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Is there any data or theory about human visual system to identify details under noise?
For one clean image, one person can identify every details at first. Then white Gaussian noise is added to the image.
With low noise level, one person can still identify every details even though ...
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Could somebody help me understand this paragraph explaining the relationship between noise and sensor size?
According to this article from dpreview, which compared noise between a full-frame camera with a full-frame lens (the D810), the same full-frame camera with an APS-C lens, and an APS-C camera with the ...
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