Most large-sensor cameras use a Bayer colour filter pattern to allow full colour images to be output - after "debayering". This entire process is now pretty routine but unfortunately what is also routine is the amount of light lost through the colour filter process. Less light means more noise, and noise is what ultimately limits the low-light capabilities all cameras
As we saw in my previous article on sensor technology, we can now build sensors with enormous numbers attached to them - if not trivially, at least reliably. Given that current 4K sensors are more than adequate to replace 35mm film in terms of sheer resolution, we need to be careful about turning this into a numbers game.
To mark the occasion of the new year, our editor has asked me to come up with some predictions for the coming twelve months
Canon is one of the relatively few manufacturers that develops its own sensors. This means that they're in a great position to create new sensors with new capabilities, and that's just what they've done with their new 35mm Full Frame CMOS sensor for video capture
You may have heard that one of the top camera manufacturers is taking legal action against another for alleged patent infringement. This is news, but there's very little point in speculating about the outcome at this stage. Only a select group of people working for those companies will have access to evidence that proves the rights or wrongs of the case. We certainly don't
Recently I've been expressing the view that all cameras are pretty much the same, because they all use the similar technology (give or take) for their sensors. I don't mean to be unnecessarily cruel about the work of camera manufacturers – taking an electronic component such as an imaging sensor and making it into a usable tool is far from trivial. Still, the absolute performance of cameras is determined by what you can get off the lump of silicon behind the lens
Somehow, I managed to overlook the fact that last month saw the death of Bryce E. Bayer, the man who decided that the best way to make a single-chip colour imaging sensor was to silk-screen a pattern of coloured filters on the front