Adam Fields (weblog)

This blog is largely deprecated, but is being preserved here for historical interest. Check out my index page at for more up to date info. My main trade is technology strategy, process/project management, and performance optimization consulting, with a focus on enterprise and open source CMS and related technologies. More information. I write periodic long pieces here, shorter stuff goes on twitter or


Digital photo noise reduction by calibration

Filed under: — adam @ 12:32 am

The core of this technique is to take a black frame (with the lens cap or a dark towel over the lens) at exactly the same ISO and exposure time settings, then subtract that frame from your image. This should give you a much clearer image with much less noise. This technique has been floating around for a while, but this is a very clear description of the process, plus a very strong background explanation of why it works and what kinds of noise it doesn’t fix.

Comments are closed.

Powered by WordPress