Sorry, correction to my post, 2 stops is 4X.
Personally, I only us B+W filters.
no offence!
I didn't immediately recognise B+W, but have come across them before.
B+W is a manufacturer, B&W is what a lot of us do here
I agree with Steve B regarding the additional compensation for some filters, the mfrs rating is a starting point like so many other things involved in photography.
Actually, it's the other way around. If the meter disagrees with the filter factor, the meter is wrong.
If the meter's purpose is to determine what settings to use to capture the scene it meters on something having the same spectral reponse as the meter, then the meter is not wrong.The meter just doesn't have the same spectral response as film that's not to say the meter is wrong.
Yes, "if".If you're using 5X as a factor with a 25 then you're not using the mfrs factor of 4X and have confirmed what I said. IE: the mfrs rating is a starting point and you need to determine your very own interpretation of it.
"If"=First word in the paragraph.
Else (if it's purpose is to determine what settings to use to capture the metered scene on something having the spectral reponse of film - something like, say, film) the meter is indeed wrong.
Yes, "if".
If you are using 5x, and if that is not what the manufacturer says to use.
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