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New Contributor
Posts: 1
Registered: ‎08-17-2013

Why do I get lots of noise in my photos on the D30 at long exposure times with 100 ISO speed? Help!

So I'm using a Canon D30 (3.1 megapixel). My ISO speed is set to 100, but when take phots at very slow shutter speeds I get a lot of noise. And I mean a lot. Can anybody help?

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Respected Contributor
Posts: 1,861
Registered: ‎12-02-2012

Re: Why do I get lots of noise in my photos on the D30 at long exposure times with 100 ISO speed? He

Long exposure time is the 2nd main way to get noise in an image.  Not a lot you can do other than post processing.  How long an exposure?  Perhaps a compromise like ISO 200 and a shutter that is half as long (twice as fast) would be slightly better if you played around with it.  Or perhaps that would be even worse.

Scott

Canon 5d mk 4, Canon 6D, EF 70-200mm L f/2.8 IS mk2; EF 16-35 f/2.8 L mk. III; Sigma 35mm f/1.4 "Art" EF 100mm f/2.8L Macro; EF 85mm f/1.8; EF 1.4x extender mk. 3; EF 24-105 f/4 L; EF-S 17-55mm f/2.8 IS; 3x Phottix Mitros+ speedlites

Why do so many people say "FER-tographer"? Do they take "fertographs"?
Esteemed Contributor
Posts: 3,800
Registered: ‎06-11-2013

Re: Why do I get lots of noise in my photos on the D30 at long exposure times with 100 ISO speed? He

There is a relationship between sensor temperature and noise. Long exposures heat up the sensor and generate more noise.

When I do imaging (lots of long exposures) the sensor will get quite warm because it doesn't get a chance to cool off much between images.
Tim Campbell
5D III, 5D IV, 60Da
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