View Full Version : GL-2 ND filter


Bill Ball
October 26th, 2004, 09:15 AM
Does anyone know the strength of the built-in ND filter on the GL-2? I looked through my manual and could not find it.

Thanks

Robin Davies-Rollinson
October 26th, 2004, 11:03 AM
Bill,
You could work it out by exposing a scene with the ND filter on in manual mode, then switch filter off and see how many stops you have to close down to get the correct exposure.
I might try it for you later when I get home...

Robin

Ken Tanaka
October 26th, 2004, 06:07 PM
Offhand, I believe it's approximately 2 stops.

Alex Ratson
October 26th, 2004, 08:51 PM
I did my own little test on this a few days ago and it seemed to be about 2 stops.

Cosmin Rotaru
October 27th, 2004, 12:00 PM
Bill, as far as I know, every step up/down is 1/4 of a stop. So 8 steps should be 2 stops. Is that true guys? I need to be sure of this...

Tom Hardwick
October 28th, 2004, 05:16 AM
Not sure what you mean by the 'step', but half stops are shown in the v/finder. So f2 to f2.8 is a whole stop. f4 to f4.8 is a half stop. If you're filming at f4 and want to film at f5.6 you've got to double the amount of light in the room.

tom.

Cosmin Rotaru
October 28th, 2004, 09:10 AM
Thanks Tom. I'll have to check the viewfinder with your information.