Short vs long nb subs

[Shiraz (Ray)]

Originally Posted by Slawomir

Thanks Rick, will definitely check the maths behind it

the underlying maths can be found here - Stan's analysis includes an almost identical equation to that in the IIS thread: http://www.stanmooreastro.com/eXtreme.htm

[gregbradley]

Just in case you thought your Kodak sensor was all sexy. Look at the read noise for the freely available Sony A7r2 42.4 megapixel full frame back illuminated sensor with the analogue to digital converters on sensor.

1.8 electrons at ISO640! Yikes.

http://blog.kasson.com/?p=14035

Greg.