Quote Originally Posted by GaryT View Post
Have you added in a bellows factor?

FWIW, you are correct in thinking that if you meter through the filter you've already included the filter factor...all things being equal. Reflected reading from a gray card?
just curious what is FWIW ? and no i don't use a grey card i just try and image what part of the scene i want to fall in that space ( 18% grey space )