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32 votes

Why would using higher ISO and faster shutter speed yield more noise than using lower ISO and slower shutter speed?

So I first shoot with ISO 1600 and shutter speed set to 1/125 second and then I shoot with ISO 3200 and shutter speed set to 1/250 second. The amount of light should be identical and indeed both shots ...
Michael C's user avatar
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23 votes
Accepted

Lots of noise in my hockey pictures. What am I doing wrong?

A few things you can do to improve your results. Use ISO 5000 or 6400. The way Canon DSLRs handle the ISO settings between the full-stop settings (100, 200, 400, 800, etc.) means ISO 5000 is cleaner ...
Michael C's user avatar
  • 175k
12 votes

Does Manual iso = low noise?

TL;DR: In low light conditions, selecting manual or auto ISO is a decision about risks: having lower or higher noise vs. the probability of blurred pictures vs. time. ISO, aperture, exposure time - ...
user24582's user avatar
  • 781
11 votes

Is there any point in ultra-high ISO for DSLR [not film]?

For some sort of photography high ISO is very important. At some point the picture quality does not matter as much as having at least taken a photo, even if it is very noisy. News journalists or ...
Nico Harms's user avatar
10 votes

Does Manual iso = low noise?

No, there is no difference between Auto ISO choosing ISO 800 versus manually selecting ISO 800. The end result is the same: the photo is taken with an ISO value of 800. Consider this scenario: You ...
maples's user avatar
  • 364
8 votes

What is the physical cause of increasing noise at high ISO?

ISO for Analog vs Digital ISO is confusing in digital photography in part because it was actually meant for film photography. In film photography, ISO 400 really is more sensitive than ISO 100 film. ...
Tim Campbell's user avatar
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7 votes
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Does changing the ISO of a modern digital camera really change the gain of an electronic amplifier?

Yes Here comes the definition of Circuitry, from whatdigitalcamera.com CCD and CMOS sensors differ in terms of their construction. CCDs collect the charge at each photosite, and transfer it from ...
Olivier's user avatar
  • 4,193
7 votes

Why do some sports photos I took with higher ISO have lower noise than others with low ISO?

Only difference is lighting and venue... That's all the difference you need. Addendum: Now that you've posted example images, we can point out some other differences as well. In the earlier image on ...
Michael C's user avatar
  • 175k
6 votes

Is there any point in ultra-high ISO for DSLR [not film]?

Beyond the sensationalist title, I think what you are asking is simply - Are my results typical? To which I'd answer, yes your results are typical and expected. I don't often try to shoot in the ...
dpollitt's user avatar
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6 votes

Why are all indoor pictures with my camera grainy?

You're the victim of typical indoor light and small sensor. It's darker indoors than what you think. The DC-FZ82 has a crop factor of 5.6. To put this into context, even entry-level DSLRs and ...
juhist's user avatar
  • 6,770
6 votes

How much ISO noise is removable in post?

The moon is really a special case, because it is mostly grey. So you can remove chroma noise by just picking a channel (green, usually). This also removes some of the chromatic aberrations on the ...
xenoid's user avatar
  • 21.5k
6 votes

Does Manual iso = low noise?

First there is no such thing as "no noise". Even on base ISO you have noise in the photos. And set ISO manual do not reduce noise. If you have two photos, one with auto ISO 100 and one with ...
Romeo Ninov's user avatar
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5 votes

Best way to remove the red tint in shadows astrophotography

This is going to be a really quick example of how to do it. You'll have to be a bit more precise when you do it yourself. Add a Hue/Saturation Adjustment Layer by clicking on this icon beneath your ...
Manly's user avatar
  • 315
5 votes
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Doubling ISO vs summing pixel values from 2 shots - different?

For #1 and #2. Doubling exposure and stacking two exposures are going to be similar, but not exactly the same. Doubling exposure means you get twice as much signal, for a single unit of read noise. ...
jrista's user avatar
  • 70.7k
5 votes

Does Manual iso = low noise?

You are muddling two things: The particular ISO value chosen (100, 200, 1200, etc) The way of choosing that value It is the value chosen which affects the amount of noise: a high value is more ...
IMSoP's user avatar
  • 250
4 votes
Accepted

What matters for low light performance?

If you are genuinely serious about doing night photography you would be much better off with a full frame camera. A used 5D Mark II (or maybe even a well used 6D if you're willing to wait on a good ...
Michael C's user avatar
  • 175k
4 votes

What is "ISO" on a digital camera?

Film speed In analog photography, ISO measures the sensitivity of the film to the light. A film with higher speed will reach its saturation (or overexposure) point faster. You can use a low-ISO film ...
relatively_random's user avatar
4 votes
Accepted

How close are we to the theoretic limits of sensor low-light performance?

Obviously, if we get this ratio to just "1", we'd get our perfect photon counting device, and clearly we aren't there yet, but with the commercially-available sensors in 2017, how close are we? The ...
Rob's user avatar
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4 votes

Why am I getting a lot of noise at 1000iso when my camera says it can go up to 6400?

It also depends on the subject. If your subject has a lot of flat black areas the noise will show up much more than on a patterned colourful/white area. As already stated the camera's max ISO is not ...
David's user avatar
  • 186
4 votes

Are there Lightroom plugins for noise reduction which work on RAW data?

It sounds like you want to use an alternate noise reduction algorithm integrated into Lightroom's RAW conversion, as an alternate for or addition to the built-in noise reduction. I don't think there ...
mattdm's user avatar
  • 143k
4 votes

What is the physical cause of increasing noise at high ISO?

Think of ISO like an amplifier - it increases the gain on the incoming signal. If you have an audio amplifier & an old AM radio tuned to a distant signal, you have to turn up the amp in order to ...
Tetsujin's user avatar
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4 votes
Accepted

How much ISO noise is removable in post?

Diffraction and noise You basically used a 3000mm f/30 lens, so heavy diffraction is expected. You simply cannot obtain sharp results with this lens and teleconverter, even if you manage to focus the ...
Eric Duminil's user avatar
  • 2,273
4 votes

Very noisy image, looks like stars

Some cameras have a 'long exposure noise reduction' setting which should eliminate hot pixels and reduce digital noise. Two exposures are taken in immediate succession, the first with the shutter open ...
Adam Gold's user avatar
  • 101
4 votes

Does Manual iso = low noise?

In short, manual vs automatic ISO setting has nothing to do with noise. I'll try to give a short summary about how noise works, which you help you understand how much noise you will get in different ...
Szabolcs's user avatar
  • 2,883
4 votes
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What is read noise?

Read noise is essentially circuit noise from readout of the sensor photosites up through ADC conversion into digital values. It is typically mostly amplifier and capacitor switching noise. But that is ...
Steven Kersting's user avatar
3 votes

Does changing the ISO of a modern digital camera really change the gain of an electronic amplifier?

Yes. The sensor is just buckets collecting the photons that come in, and it cannot adjust to be a greater sensitivity. The amplifiers can.
WayneF's user avatar
  • 12.9k

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