I posted this note in a photography forum. Nobody had an answer. Hopefully I will have better luck in this forum. Thanks.
I come from an astronomical imaging background. My astronomical CCD camera allows what they call binning. That is, when I bin the CCD it increases the pixel size and the sensitivity.
I notice on the new Canon D50 that they have two sRAW setting which result in much smaller sRAW files. Does anybody know if these sRAW setting are achieved by binning the CCD? This would result in much greater sensitivity than the RAW setting.
Since I am interested in using my photography camera's for pretty pictures of the night sky I would be interested in knowing how they work. The astronomical CCD camera's have certain parameters that have to be met to meet scientific standards.
So the question is "Does anybody know how the sRAW settings are achieved?" and "Does using the sRAW setting result in greater sensitivity?"
Then I found this comment on the web about the Canon 50D.
* Pixel binning for high ISOs. A new technology enabled by the complexity and processing power of DIGIC IV where they can bin 2, 4 or 8 pixels together at the raw level and average out the noise between them. This is seen by Canon as a key technology in balancing very high resolution sensors (in the 50mp range) with low noise at very high ISOs. Right now they are not pushing this too much with the 50D so as to not create confusion in the market (they see more potential for the technology as sensors get larger and in the pro-market).
So does this mean that you cannot bin with the older DSLR camera's but you can with the new Canon 50D??
I come from an astronomical imaging background. My astronomical CCD camera allows what they call binning. That is, when I bin the CCD it increases the pixel size and the sensitivity.
I notice on the new Canon D50 that they have two sRAW setting which result in much smaller sRAW files. Does anybody know if these sRAW setting are achieved by binning the CCD? This would result in much greater sensitivity than the RAW setting.
Since I am interested in using my photography camera's for pretty pictures of the night sky I would be interested in knowing how they work. The astronomical CCD camera's have certain parameters that have to be met to meet scientific standards.
So the question is "Does anybody know how the sRAW settings are achieved?" and "Does using the sRAW setting result in greater sensitivity?"
Then I found this comment on the web about the Canon 50D.
* Pixel binning for high ISOs. A new technology enabled by the complexity and processing power of DIGIC IV where they can bin 2, 4 or 8 pixels together at the raw level and average out the noise between them. This is seen by Canon as a key technology in balancing very high resolution sensors (in the 50mp range) with low noise at very high ISOs. Right now they are not pushing this too much with the 50D so as to not create confusion in the market (they see more potential for the technology as sensors get larger and in the pro-market).
So does this mean that you cannot bin with the older DSLR camera's but you can with the new Canon 50D??
