05-22-2016, 06:48 PM
(This post was last modified: 05-22-2016, 07:02 PM by Brightcolours.)
1. The main reason why Canon sensors are more noisy is just more read noise. Not much to do with pre processing or non-pre-processing, but rather just less noise accumulation during ADC (on chip, less transport of the signal) That Canon black level "setting" is more correct than how Nikon does it, does not matter much in respect to DR.
2. Already my 20mp 6D loses resolution to diffraction at f8..... See the 5DS-R tests to see how the 50mp sensor gets hit (although the Photozone results are not reliable as to the amount of loss, due to the sharpening used... Lenstip's MTF results give a clearer picture regarding diffraction resolution loss).
See the Otus 55mm f1.4 tested on a Nikon D3X as example:
![[Image: 3968_roz.jpg]](http://www.lenstip.com/upload3/3968_roz.jpg)
It is not as if the optics get worse when closing down, they do not. They "improve" until diffraction nullifies that again.
But lets not be overly dramatic about 120mp.. To double resolution from the 50mp 5DS, you will need a 200mp sensor.
2. Already my 20mp 6D loses resolution to diffraction at f8..... See the 5DS-R tests to see how the 50mp sensor gets hit (although the Photozone results are not reliable as to the amount of loss, due to the sharpening used... Lenstip's MTF results give a clearer picture regarding diffraction resolution loss).
See the Otus 55mm f1.4 tested on a Nikon D3X as example:
It is not as if the optics get worse when closing down, they do not. They "improve" until diffraction nullifies that again.
But lets not be overly dramatic about 120mp.. To double resolution from the 50mp 5DS, you will need a 200mp sensor.