Re: DxOmark: The Sony A7 III has the best low-light score ever tested
Fred Miranda wrote: JohnDizzo15 wrote:
Makes me curious whether there is anything in software moving forward that could help mitigate the disparity of DR between the A9 and the A7 line or if this is simply a hardware limitation of the stacked sensor.
Yeap, it does not look good on paper that their "Basic" model full frame is performing noticeably better than their flagship. (sensor-wise)
I don't know that it is such a big deal. The difference at high ISO is truly tiny. Remember this is an ISO units and both cameras are between 3200 and 6400. Keep in mind in ISO units you need 3200 units from 3200 to get another stop of performance. So the 213 units higher performance of the A7 III over the A9 is something like one fifteenth of a stop. Now that is truly tiny and may well be within the ability of the test to measure accurately. Same for color depth 25 and 24.9 is a small difference and who knows how the rounding happened in reporting those two scores. They could be almost identical, but fall on either side of the line for rounding. The big difference is of course base ISO dynamic range, but we know that. The cameras are almost identical from ISO 800 and above and everything, so just don't get the A9 if you are predominantly going to shoot low ISO and you don't need the speed advantages. If you are shooting even moderately high ISO, however, there is no real disadvantage to the A9 sensor and you can use all the other things the A9 provides -- robust silent shutter, no blackout viewfinder, bigger viewfinder, better AF, faster fps. Now if none of those things matter to you and especially is you shoot a lot of low ISO, then you are in the enviable position of getting the cheaper camera and it will be better suited for your use.
Oh, and it isn't the best high ISO camera tested either, both the 44X33 sensors (in the Hassy X1D and Pentax645Z have high ISO scores that are a quarter of a stop to a third of a stop better than the A7 III.
Re: DxOmark: The Sony A7 III has the best low-light score ever tested
Fred Miranda wrote: JohnDizzo15 wrote:
Makes me curious whether there is anything in software moving forward that could help mitigate the disparity of DR between the A9 and the A7 line or if this is simply a hardware limitation of the stacked sensor.
Yeap, it does not look good on paper that their "Basic" model full frame is performing noticeably better than their flagship. (sensor-wise)
I don't know that it is such a big deal. The difference at high ISO is truly tiny. Remember this is an ISO units and both cameras are between 3200 and 6400. Keep in mind in ISO units you need 3200 units from 3200 to get another stop of performance. So the 213 units higher performance of the A7 III over the A9 is something like one fifteenth of a stop. Now that is truly tiny and may well be within the ability of the test to measure accurately. Same for color depth 25 and 24.9 is a small difference and who knows how the rounding happened in reporting those two scores. They could be almost identical, but fall on either side of the line for rounding. The big difference is of course base ISO dynamic range, but we know that. The cameras are almost identical from ISO 800 and above and everything, so just don't get the A9 if you are predominantly going to shoot low ISO and you don't need the speed advantages. If you are shooting even moderately high ISO, however, there is no real disadvantage to the A9 sensor and you can use all the other things the A9 provides -- robust silent shutter, no blackout viewfinder, bigger viewfinder, better AF, faster fps. Now if none of those things matter to you and especially is you shoot a lot of low ISO, then you are in the enviable position of getting the cheaper camera and it will be better suited for your use.
Re: DxOmark: The Sony A7 III has the best low-light score ever tested
Fred Miranda wrote: JohnDizzo15 wrote:
Makes me curious whether there is anything in software moving forward that could help mitigate the disparity of DR between the A9 and the A7 line or if this is simply a hardware limitation of the stacked sensor.
Yeap, it does not look good on paper that their "Basic" model full frame is performing noticeably better than their flagship. (sensor-wise)
I don't know that it is such a big deal. The difference at high ISO is truly tiny. Remember this is an ISO units and both cameras are between 3200 and 6400. Keep in mind in ISO units you need 3200 units from 3200 to get another stop of performance. So the 229 units higher performance of the A7 III over the A9 is something like one fifteenth of a stop. Now that is truly tiny and may well be within the ability of the test to measure accurately. Same for color depth 25 and 24.9 is a small difference and who knows how the rounding happened in reporting those two scores. They could be almost identical, but fall on either side of the line for rounding. The big difference is of course base ISO dynamic range, but we know that. The cameras are almost identical from ISO 800 and above and everything, so just don't get the A9 if you are predominantly going to shoot low ISO and you don't need the speed advantages. If you are shooting even moderately high ISO, however, there is no real disadvantage to the A9 sensor and you can use all the other things the A9 provides -- robust silent shutter, no blackout viewfinder, bigger viewfinder, better AF, faster fps. Now if none of those things matter to you and especially is you shoot a lot of low ISO, then you are in the enviable position of getting the cheaper camera and it will be better suited for your use.
Mar 26, 2018 at 11:51 AM
Previous versions of Steve Spencer's message #14414262 « DxOmark: The Sony A7 III has the best low-light score ever tested »
