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#11
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Nagging questions
nospam wrote:
In article , Eric Miller wrote: Just some random, mostly resolution-related questions. I fully accept that the questions themselves may be misguided, so feel free to interpret. Chip size, noise and other stuff. All other things being equal, will a larger sensor have more noise? no. for a given sensor technology and pixel count, a larger sensor will have larger pixels, and therefore have less noise. http://www.clarkvision.com/imagedeta...formance.summa ry/ Okay, but if the larger sensor has pixels of the same size, will it have more noise? Eric Miller www.dyesscreek.com |
#12
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Nagging questions
In article , Eric Miller
wrote: Okay, but if the larger sensor has pixels of the same size, will it have more noise? if the pixels are the same size, the larger sensor will have more of them, which is also beneficial. |
#13
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Nagging questions
In article , Alfred
Molon wrote: He is writing that with RAW usually you have one more stop of headroom. The D3 achieves up to 12, but it is also a full-frame camera, pretty much the best performing one at the moment. Most DSLRs use smaller sensors and have therefore less dynamic range. You claimed that "most dslr sensors are capable of over 12 stops" which is simply not true. yes it is. http://www.clarkvision.com/imagedeta...formance.summa ry/ |
#14
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Nagging questions
Alfred Molon wrote:
Most DSLRs use smaller sensors and have therefore less dynamic range. Bzzzt. Sensor size *as such* has nothing to do with dynamic range. Pixel size, however ... Small sensors tend to have smaller pixels, that's all. You claimed that "most dslr sensors are capable of over 12 stops" which is simply not true. http://clarkvision.com/articles/digi...ndex.html#data indicates that the sensors are perfectly capable of 12+ stops, based on their full well capacity and read noise, but excluding A/D noise (which is not really tied to the sensor, anyway). The rest of the page makes it clear that the camera performance is limited by a) 12 bit A/D converters, b) noise in A/D converters, c) *much* less improvement for A/D converters of 14 bit than would be assumed by the additional bits. High megaherz speeds seem to do that, at least for now. -Wolfgang |
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