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02/14/2005 09:12:29 PM · #1 |
| I just got a Nikon D70 and took some early morning (relatively low-light) shots with it. The pictures seem to be unusually grainy. Anyone have an idea why? There is a setting in the camera for noise reduction on long exposures. Will this help? Thanks. |
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02/14/2005 09:16:23 PM · #2 |
Two questions:
1.) Did you bump up the ISO, and if so to what setting?
2.) Were the pics relatively dark and if so did you boost the brightness in post-processing?
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02/14/2005 09:18:11 PM · #3 |
I had ISO on Auto, should I manually set it low?
The pics were a little dark, but very noisy before I did any processing. |
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02/14/2005 09:19:39 PM · #4 |
Turn the auto ISO off post haste. The D70 on auto pilot is not a pretty sight. Check the EXIF. I'm willing to bet the camera bumped you up to 1600 ISO.
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02/14/2005 09:22:04 PM · #5 |
Originally posted by blemt:
Turn the auto ISO off post haste. The D70 on auto pilot is not a pretty sight. Check the EXIF. I'm willing to bet the camera bumped you up to 1600 ISO. |
Yep, what Clara said. For best results on still life/landscape in low light, set ISO to lowest setting (200 for the D70) and use a tripod. Make sure that the exposure is correct, not underexposed, as "bringing up" exposure in post-processing will also make noise more visible.
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02/14/2005 09:25:14 PM · #6 |
It also has to do with what's in the frame. I took several photos at an event with low light and many of then were shot at 1600 ISO. Some of them (especially things like walls, curtains, tv screens, etc) showed a lot of noise. Others, like this one:
were beautiful with a run through NeatImage. I'm particularly pleased that noise seems to be lower on people than it is on flat objects at high ISOs.
Message edited by author 2005-02-14 21:26:05.
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02/14/2005 09:28:22 PM · #7 |
Indeed the subject matter does make a difference. In photos where there are dark (but not black) areas with relatively little detail, noise will stand out like a sore thumb.
Color balance of the lighting also makes a difference. If you shoot in very low-color-temperature light, like firelight for instance, you'll notice a ton of noise in the blue channel, particularly if you try to correct the color balance in post-processing.
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02/14/2005 09:49:36 PM · #8 |
I like noise
edit: sometimes I add it after i take the picture.
Message edited by author 2005-02-14 21:49:56.
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