How can I minimize noise when photographing a static subject on a tripod?
Asked 2/4/2011
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I’m photographing small crystals with a Micro Four Thirds camera on a tripod, using controlled lighting. Since the subject doesn’t move, I can freely adjust shutter speed, aperture, and ISO. My auto-mode shots were noisy (for example, around f/9, 1/250s, ISO 3200). I’d like to preserve fine detail and avoid heavy noise reduction in post-processing. What camera settings and shooting technique will give the cleanest image in this kind of setup?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
15y ago
2 Answers
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The best way is to use the lowest ISO possible (100 is often the best), and slightly overexpose (without clipping highlights), then post process it back down. This will help to decrease noise in the shadows.
Also shoot raw, so that any adjustments can be made before the conversion to jpeg.
Originally by user67. Source · Licensed CC BY-SA 4.0
user67
15y ago
0
Generated from our catalog & community — verify before relying on it.
For a static subject, the simplest way to reduce noise is:
- use the lowest ISO available (typically ISO 100 or 200)
- use a longer shutter speed to compensate
- choose a mid-range aperture such as around f/5.6 for good sharpness
- shoot RAW
High ISO is the main reason your auto shot was noisy. Since the crystals and camera are not moving, a long exposure is usually preferable to raising ISO.
Also, use a self-timer or remote release so pressing the shutter doesn’t shake the camera. If your highlights allow it, exposing a little brighter without clipping can help keep shadow noise down, then you can adjust brightness back in RAW processing.
If you want even cleaner results, you can take several identical exposures and average them in software; this can reduce random noise further.
So in your setup, start with minimum ISO, a stable tripod, timer release, RAW capture, and adjust shutter speed as needed rather than letting the camera choose ISO 3200.
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