DxO debayer'ed it anyways so TIFF should be fine for additional processing at 32 bitīad sensor data from the sensor would have appeared in the ARW, so that's not quite it. The best thing for me to do right now is just find a DNG to TIFF converter that handles 16 bit colour. Still could be DxO's fault too but less likely, they are reading the DNGs right, and their product family is very impressive and likely have a lot of talent working on them.
The 30 second exposure test gave me a small clue as the file size is significantly smaller and so now I will be checking thing regarding DNG compression and ensuring it's not lossy.įirstdefence's clue is that open source software seems to have the same problem, which points to the DNG format specifications being read without close support from Adobe's own engineers and files decoded in a way that's technically correct on paper but fails in practice just a bit. I am trying to identify a software misconfiguration or bug. The lighting of the scene has caused some kind of overload of the sensor and the information written to the camera's file is therefore bad. There is nothing wrong with the software (any of them), the fault is in the scene's very bad lighting.
There is a massive amount of overexposure there. I think the reason the pink is not showing in the Finder's preview here on my Mac is due to the bright area being read as White and the Finder not trying to do the math required to correctly mix the R and G and B pixel information. That is far wider than what a sensor is expected to be able to handle. I just did a check and I can easily get a shot with a range of 17 stops. If you look at the image in the first post the binoculars are, to my eye, over exposed by about a stop, maybe two stops.Now add that overexposure to the relatively bright wall or window. The pink area is grossly overexposed. Weird things happen with Massive Dynamic Range Scenes which result in the sensor being hit with far too much light relative to the dark area. There is possibly some fold over happening with the high values. Weird things happen with sensors and Long exposure times.
0 kommentar(er)
