Another great result measuring the dynamic range available from the E-M5 RAW files can be seen here
. The author is keen to point out that this result can't be compared with other results from other testers but does assert that he is seeing an improvement in his real world shooting.
Returning to the TechRadar test
I mentioned a few posts back, the absolute numbers can't reflect the DR of an individual pixel as the E-M5 has a 12 bit A/D converter which can't give a 13 EV dynamic range. Rather puzzling.
In trying to figure how that might be possible I created a new thread Impossible dynamic range measurements!
. It's speculation on my part but if I'm on the right track then any test which relies on sensor data being converted to TIFF before the dynamic range measurement software can be deployed is extremely suspect. One can only fairly make comparisons of the dynamic range a sensor can deliver if the same RAW converter software is used and one can assume that said software uses the same algorithm to extrapolate dynamic range from unsaturated adjacent pixels of a different colour/quantum efficiency.
I can't see that assurance from the TechRadar test so, personally, I now consider it meaningless. But it does seem that Olympus has a better sensor in the E-M5 than the E-P3 as Pekka Potka used the same software for both cameras so Olympus have stepped up their game.