The A/D stage can definitely be a bottleneck in some cases. For example, if it takes 50ms to perform a single full-sensor readout, you're not going to do more than 20fps no matter how fast everything downstream is. Remember, with current sensor tech you can't start a new exposure "from the top" before the sensor is completely flushed. And if that 50ms is reduced to 12ms by switching to 12-bit ADC mode, that's going to enable all sorts of stuff even if the downstream pipeline bottlenecks below 4x speedup.
I'm going to drop in this at the end. Canon uses slope comparator ADC's on their sensors, so yes, it's double the time for each increased bit.
sensor speed was most certainly one of the critical bottle necks - consider Canon couldn't even do full width 4K until this generation of sensor started with the 32.5MP APS-C sensor and their rolling shutter was atrocious before.
the 32.5MP sensor jumped the performance of the APS-C sensors a ton using the same DIGIC version.
This is kind of why I'm stoked right now - not really because of the R5 because it what is the percursor for (much like that petapixel article). I wrote my thoughts on my website about all this is the Rs and R1,etc.. but really to summarize.. we live in a Canon world were we just could have a 90MP R5s running at 10fps this year. It would have been impossible to even rationally contemplate that a year ago.
Last edited:
Upvote
0