Quote Originally Posted by Old-N-Feeble View Post
Basically, what you're conveying is, particularly with films like SFX200, I'm just as well off metering through my non-SBC through a #29 filter? There's not much I can do to more accurately meter the IR from foliage?
Yep - there is not much to be done about SFX (and other similar speed trap films) that can't be done with a regular meter, they don't reach far enough into IR that you need to bother. And EFKE on the other hand has such a bizarre low-sensitivity IR response that a corresponding metering filter would be quite a expensive research subject. Hacked meters were more helpful in EIR/HIE days.