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ISO is the sensitivity of the camera's sensor or film; high ISO is more sensitive and often required in low-light situations, where there is a large correlation with noise.

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having problem with my dslr [on hold]

I have Nikon D3300 and was capturing images in manual mode. Then I set my shutter speed to to time setting and it took longer then usual to capture the image. Today I used it again and when I saw ...
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1answer
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Why are there shiny bits in my night photo?

Fisheye lens, so no UV filter installed that can mirror it. ISO 800, 10s shutter, Canon 40D my guess is in-camera high ISO reduction algorithm gone awry. could be? Edit: I was talking about the bits ...
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1answer
151 views

meaning of ISO setting on Sony alpha 6000

Under the premise that the 14-bit A-D converter has approximately the range needed to quantize every single photon (<25000 full well capacity, 16K possible values) for low-light shooting raising ...
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What can cause yellowish horizontal bands when using a relatively high shutter speed? [duplicate]

I'm using a Canon 6D, using my Canon 50 mm f/1.8 lens. I was taking pictures of my son using his "youpala" (no idea how you say that in english :D) last night, in my kitchen, with only my ceiling ...
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1answer
65 views

In what kinds of images would high noise be most manageable?

In what sort of photographs does the noise least detract from the image? (The noise is that resulting from use of high ISO settings.)
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2k views

Exposure compensation or ISO sensitivity? [duplicate]

If ambient light isn't enough and I don't have a tripod with me for long exposure, which one should I prefer to increase the brightness of my photo? I know high ISO comes with noise. Is there any ...
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2answers
219 views

Why is my camera metering indoor scenes as darker than I expect it would?

I am shooting in natural light, with my subject facing a full floor-to-ceiling south facing window. You would think my meter would allow ISO between 200-400 in bright light, but I was lucky to get it ...
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1answer
145 views

Why does raising ISO make image quality appear lower even though my measurements suggest it shouldn't?

I know this may be rehashing one of the most discussed topics, but I would like to take it a slightly different direction and solicit input. First of all, I am familiar with the electrical ...
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1answer
65 views

Same mfg process = same performance in FF vs. cropped sensor?

I've seen generalizations that full-frame sensors tend to exhibit better low-light performance and dynamic range than a cropped-sensor specifically because they tend to use larger photosites that ...
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1answer
317 views

How to denoise a dark photo with extremely high ISO?

There are situations where I would reluctantly have to turn the ISO to the larger extreme. Nevertheless I can get some photos that I pretty much like under these circumstances. Here is an example. ...
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4answers
336 views

How much does noise reduction let me increase ISO without a visible decrease in quality?

When I take low-light photos with my Sony NEX-5R, I find that I stick to ISO 200 to ensure acceptable noise. I was told that fear of ISO will hold me back, and that I should do noise-reduction in ...
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1answer
120 views

Does a deeper photosite increase the dynamic range?

As I understand, a bigger photosite (on the sensor) enables a bigger dynamic range and also better high ISO performance. Is there a reason not to make the photosite deeper?
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4answers
502 views

How does low-light conditions affect color quality?

I recently photographed an event that took place while the sun was setting. The quality of colors seem to deteriorate as it gets darker. The scenes were well-exposed as the ISO changed from ~1200 to ...
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1answer
307 views

Is there a technique to increase saturation in high ISO?

[This question assumes JPEG shooting, with minimal post processing.] In an unavoidable situation, you have to jack up the ISO. High ISO, however, comes with price - noise and washed-out color, among ...
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1answer
445 views

have accidentally taken 130 RAW shots with ISO sensitivity 10000, all noisy, now what?

... now what, Darktable or Lightroom? I have taken 30 shots indoors at artificial light at ISO 10000. On the live view display of the camera they looked great, now on the monitor, in the fullscreen ...
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3answers
229 views

Is video a good alternative to low available light photography?

I took a slow zoom and my mirrorless to a birthday party at a local kids' gym not knowing the light situation. It was dimly lit, and needless to say, the slow zoom + high shutter speed to freeze ...
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2answers
238 views

How about high ISO (low light) performance testing of sensor with camera's auto-ISO option?

I'm in the market for a camera with better high-ISO capability than my current ones. There are more than enough reviews on the internet that measure cameras' high ISO performance. They usually pit one ...
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2k views

How do I correctly expose a 3200 ISO film roll on a camera that allows 1600 ISO?

I just bought a 3200 ISO film roll (ILFORD DELTA 3200), and my camera (Chinon Cm-5) allows to set films up to 1600 ISO. What can I do to expose correctly? I thought of metering at 1600 and when it's ...
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6answers
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High ISO or faster lens for a distant evening portrait?

There's a kid in the apartment across the street from my west-facing house. She comes out to their balcony at about 5pm. It's a delight to see her play and I have often tried to capture her smile, but ...
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2answers
295 views

Wedding cameras - disposable or ebay compacts + film

For a wedding I was thinking of trying to get some better quality disposable cameras. The highest ISO disposables seem to be 800 colour or 400 B&W (I would like to get a mix of colour and ...
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2answers
318 views

Why photos taken with flash appear to have less noise?

I have not verified this on pixel-peeping level. But I have observed that photos taken with flash (built-in one in my case) appear to have very less noise at ISO 800/1600 than the ones taken without ...
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4answers
676 views

Has low-light ISO performance really improved over the past 3-4 years?

I have a Canon 40D and I always shoot RAW. I am overall pleased with the 40D except for its low-light performance. Anything at or above ISO 800 is unusable for my taste. Just to solve this problem I ...
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3answers
2k views

Why does storing a long exposure photo take almost as long as the exposure time itself?

Last night I took some night sky shots, and I've noticed that with long exposure times (15s, 30s) the time it took to store the images in the camera memory card (jpeg) took roughly as long? The ...
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2answers
756 views

Why does Nikon warn about banding at high ISOs when using autofocus on Nikon D4 or D800?

Nikon says that banding may occur at high ISO sensitivities with autofocus on the D4 or D800: D800 Noise in the form of horizontal lines may appear in pictures taken with AF-S Zoom Nikkor 24-85 ...
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6answers
475 views

How can I improve shots in the dark, when tripod or flash are not available?

About once a year, at my school we have this event called "Humans versus Zombies", whereby there are these "missons" that occur in the dark at night. I've been trying to capture what goes on there: ...
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286 views

Why does Nikon (e.g. D5100) use Hi1 and Hi2 instead of numeric ISO settings? [duplicate]

Possible Duplicate: What does “expanded ISO” mean? Are these settings real sensitivity options when reading the CMOS sensor or just after-processing what can be done outside the ...
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7answers
3k views

Is high ISO useful for photography?

I started photography sometime back, and always wondered when is high ISO handy in photography? Also can it be used to get any special effect in pictures? My camera has Max ISO of 800 but I see some ...