Discussion in 'Lifestyle' started by GlobeGuy, Jul 12, 2008.
Approximate how much brightness do you lose with CP, in terms of EV?
1/2 - 1 stop depending on the CPL from what I've seen.
my CPL puts me down 1 1/4 stop. others i've used are only 1/2 stop.
each is different and theres easy ways to find it. the packaging may even include the filter factor. Mine were 1-2 stops.
which filters only result in -1/2 stop? and how expensive are they??
The only one I've had that was 1/2 stop was a complete POS Tiffen that flared like a mofo. Not recommended at all.
My Hoya Pro 1 is 2/3 stop (iirc. it's been a while since I used it) and my Heliopan is 1 stop.
whats the -EV of B+W?
more is better in general with a polzarizer
Filter factor is between 2.3 and 2.8.
Filter factor does not directly equate to EV, I'd do the math for you but filters list it in FF, so you need to know how to do it
I don't own one, so I couldn't tell you.