Noise Articles


Nikon D300, how much of an improvement?

We were curious to see what improvements there are in the Nikon D300 compared to the Nikon D200. To find out we performed a few simple tests. Almost all of the tests you are about to see were done on the actual RAW file using Matlab. This means that there is no image processing involved […]

High ISO with DPP should and can be better

We have already established that Canon’s current noise reduction system is excellent. However, you can only take advantage of the new system by using JPEGs produced internally by the camera (As of today the EOS 40D, the EOS 1D Mark III and the EOS 1Ds Mark III are using Canon’s new noise reduction system). Many […]

Lab Noise

At the time of writing this article, our digital photography world is going through a change. A big change. Camera makers are finally starting to apply their noise reduction algorithms with some innovation. This is coming from a need to produce better high ISO images than ever. Sensor makers are trying (and encouraged) to stuff […]

Is our noise measurement affected by temperature?

I’ve read a lot of articles about image sensors over time. Many of them were talking about something called “dark current noise”. dark current is electrons that are captured by the sensor but not as a reaction to light. This is actually unwanted signal the sensor has picked up. This unwanted signal has a fluctuation, […]

RGB Noise Reduction

Large numbers of noise reduction algorithms and patents are available. Camera makers use the algorithms that they developed for their cameras and RAW software. During the years that I’ve been following the market it seems to me that all those algorithms have one thing in common – they all work on the RGB color space. […]