I was recently playing around with a friend's NX7 and another friends NX9 and I came across an image artifact/phenomenon that I was hoping you other NX owners could test as well.
I am actually seeing a drastic difference between the NX7 and the NX9.
Essentially what I am seeing on the NX7, is on scenes dark enough to trigger the Auto DI closing, bright highlight details are almost completely blown-out. On the NX9 I am seeing basically NO blow-out.
I have taken some screenshots from a good test scene for you to try on your projectors. I took these images from the UHD and tone-mapped them to SDR with madVR so that everyone will end up displaying the exact same image on their projectors.
What you need to do is open the image, and then look at it in manual iris mode, and then turn on Auto 2 and even Auto 1 iris, and watch for a couple seconds to see if all the detail in her dress blows out. The blow out doesn't happen instantly, it happens in a smooth transition over about 2 seconds as the iris starts to clamp down.
Settings to use:
I have included both rec709 as well as rec2020 images so you can try testing it in SDR picture mode as well as with the rec2020 filter engaged on the NX7 and NX9.
I would also really love to see this tested on an NX5 as I have not gotten to test one. I know the iris on the NX5 is slightly different as there is no lamp iris, so maybe it will have a different result?
I assume, (but am not completely sure) that this is related to the reported Auto DI yellowing issue, but to me, the blow-out is way worse than any yellowing. It also does NOT happen whatsoever when closing the iris down manually, so as speculated, it seems to be a software gamma algorithm issue. I am just surprised that I have not seen anyone describe seeing blow-out from the auto iris, only yellowing which is why I am asking this.
Please report whether or not you see the blow-out occur and what model projector you have and *please!* include your firmware version.