ND Module: Help

[garry23]

First, I apprentice this is a dup question: but I need help for a shoot this weekend.

I'm using David M's Bulb ND Filter Module, but I can't work out the action/workflow to get the module to estimate the filter value.

I'm in LV, have entered a guess Ev, eg 3Ev for an ND8, moved the module menu to measure and tried following instructions, ie take a (correctly exposed) picture first without the filter. Then put the filter on and (I assume) take another, but I get no measurement change, ie I tried different guess values and they don't change.

Can some kind person give me a hint ;-)

Cheers

Garry

[dmilligan]

See my reply to the other thread. If you know the filter strength you don't need to measure it