Timeline for How do I reduce noise, given that I have complete control over everything else?
Current License: CC BY-SA 4.0
14 events
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| S Sep 3, 2019 at 3:16 | history | edited | xiota | CC BY-SA 4.0 |
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| Sep 2, 2019 at 19:55 | review | Suggested edits | |||
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| Apr 13, 2017 at 12:44 | history | edited | CommunityBot |
replaced http://photo.stackexchange.com/ with https://photo.stackexchange.com/
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| Feb 10, 2011 at 22:05 | comment | added | Andrew Stacey | Thanks for the very detailed answer! I particularly appreciate seeing the photos with the differences. If I could split the "accept" then I would, but I can't so you'll have to content yourself with a vote (and a message to anyone else stumbling by to vote for this one too) and many thanks. | |
| Feb 5, 2011 at 19:44 | comment | added | Alan | @jrisita: whoops I mistyped. I meant that a longer exposure doesn't always produce a decreasing amount of noise--as you said, when the sensor starts to overheat due to long exposures. | |
| Feb 5, 2011 at 17:57 | history | edited | Matt Grum | CC BY-SA 2.5 |
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| Feb 5, 2011 at 16:38 | history | edited | Matt Grum | CC BY-SA 2.5 |
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| Feb 5, 2011 at 4:56 | comment | added | jrista | @Alan: A longer exposure at a lower ISO to maintain the same overall EV does produce lower noise, until you reach an exposure time that begins to exhibit thermally related noise. If the original exposure was 1/250th of a second at f/9 and ISO 3200, you could easily open the aperture to f/3.2, lengthened the exposure to 1/30th of a second, and used ISO 100 for considerably less noise at the same final EV. | |
| Feb 4, 2011 at 22:49 | comment | added | Alan | Sure. I just wanted to point out longer exposure doesn't produce a decreasing amount of noise. | |
| Feb 4, 2011 at 22:22 | comment | added | jrista | @Alan: That's true, but it takes a pretty long exposure to do that. I would put 30s at the very lower bound of the length of time needed to create enough thermal noise, and exposures around 1 minute or longer are usually needed to exhibit fixed pattern noise and an increased noise floor. | |
| Feb 4, 2011 at 22:02 | comment | added | Alan | As somepoint, longer exposures will increase noise (due to sensor thermal dissapation) | |
| Feb 4, 2011 at 21:35 | comment | added | tomm89 | "effectively simulating the result of using an ISO setting lower than the camera could ordinarily produce" That could be the conclusion we can extract from that experiment... Was that was already known? | |
| Feb 4, 2011 at 20:06 | history | edited | Matt Grum | CC BY-SA 2.5 |
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| Feb 4, 2011 at 20:00 | history | answered | Matt Grum | CC BY-SA 2.5 |