Hi,
That image was from a series that was bracketed. Both original images were exposed to the right, with the P45+ having a bit more exposure. See raw histograms from "RawDigger" below.
This is no test shot, I happened to have two exposures from both cameras on the same shoot. These cameras I own and use, so I am familiar with them.
I went back to Chris Barrets tests. Here I pushed exposure 4 stops (like in my own test). I developed the IQ images using standard setting but without noise reduction in both LR 5.3 and Capture One.
I also downsized the images to A7r vertical pixels, so the size advantage of the IQ 260 is taken into account. See below.
Two small comments:
1) In the histogram you can see that the Sony histogram drops sharply at -7 EV, while the P45+ goes down to -12. I am pretty sure that the signal we see on the P45+ below -8EV is just noise.
2) The P45+ has some more exposure but it seems that the SLT 99 image is a bit brighter. One explanation could be more lens flare on the SLT, as a fairly complex zoom lens was used. That said, I could see some advantage to the Alpha 99 in all tests I did. Or it could be said that I am essentially confident to be able to pull shadows on the ALpha 99 but less so on the P45+.
Yeah, and just to say, I am quite happy with my P45 and I actually enjoy shooting with it! I am not going to get rid of it. But I did not expect miracles from it and I don't see any miracles. It actually works as I have expected.Best regards
Erik