This post was last modified: 2017-11-05, 12:08 by
Gunther.
NTC stands for "Night time compensation". It's a very cool feature, that I invented to not have to change the reference value anymore manually when shooting holy grail. I'm so happy that Zoltan implemented it now!
Basically you just turn it on after activating Holy Grail. It will use GPS to get the current location and compute the dawn times.
Between dawn and total darkness then the reference value will get "ramped down". The value defined for NTC defines how strong the difference is. I'd recommend to stay with the default value of 2. It will will bring down the reference to 1/2 during the transition time.
For sunrise of course, quite the opposite applies.
Try it out and let me know!