This came up in the QSI Yahoo! Group and thought I'd also post here.
Does anyone here shoot L unbinned and RGB binned with 8300 sensors? I'm trying to find out if it's a sensor thing, normal for RGB binning, or something I'm doing in terms of processing or perhaps even image capture times or number of subs.
Quote:
I'm keen to hear other experiences as well. I have a 583ws, and have found that the binned RGB is quite "blocky". I know the pixels are double the size and would expect them to be blocky in that respect, but it's more than that.
See these cropped images. The L is unbinned, the RGB is 2x2.
L: http://flic.kr/p/cHivQ5
RGB: http://flic.kr/p/cHivts
See how the binned RGB stars have a dark pixel perimeter, then lighten up again? When I do the L and RGB combination, this is evident. ie the smooth L doesn't smooth that out. The little brighter diffraction spike looking pixels are there and noticable.
As a result, I've taken to shooting 1x1 for RGB as well, but would love to be able to cut exposure times down by using binned.
I'm not sure if it's my processing, a property of the sensor (I'm sure I've read somewhere that this is common on the 8300 sensors, but haven't been able to research further), normal for combining 1x1 L and 2x2 RGB, or something else.
Perhaps it's my image capture technique? As I understand it, binned 2x2 has 4 times the gathering capability, so 1/4 of the exposure time is correct?
|