Markus
Established
Hello,
after my first rolls shot with the Mamiya 43mm lens I want to use a POL-Filter. Mamiya has a filter that can be rotated for meetering.
Can I use a normal Filter from B&W circular or linear by just adding a factor of 1 or 1,5 stops for exposing?
after my first rolls shot with the Mamiya 43mm lens I want to use a POL-Filter. Mamiya has a filter that can be rotated for meetering.
Can I use a normal Filter from B&W circular or linear by just adding a factor of 1 or 1,5 stops for exposing?
Moto-Uno
Moto-Uno
I believe the Mamiya polarizing filter is rather unique in the way it attaches and allows you to rotate it to the position for getting the full polarizing effect,something you can't see through the rangefinder viewer. Hope others will correct me if I'm way off base with this.
Regards,Peter
Regards,Peter
segedi
RFicianado
Yes, the Mamiya polarizing filter swings up so you can preview the effect. You could try to get it close by marking the spot on the filter edge after you stick the filter over the viewfinder. It's not ideal, but neither is using a polarizing filter on a wide angle lens; uneven polarization is probable. And you do need to manually correct exposure since the Mamiya doesn't meter TTL.
Markus
Established
Ok, the Mamiya Pol-Filter would be the best solution. But no store offers it and the price is somehow unique too: 240$ or about 270€. The best Filter from B&W (Schneider Kreuznach) sells for about 100€ in 67mm diameter.
My solution would be a correction of the exposure times by 1 or 1,5 stops and mark the position on the filter, where the stronges effect appears. I have never payed attention to this with my DSLR, but I think the grade of polarization is always the same for each position of the filter.
My solution would be a correction of the exposure times by 1 or 1,5 stops and mark the position on the filter, where the stronges effect appears. I have never payed attention to this with my DSLR, but I think the grade of polarization is always the same for each position of the filter.
Moto-Uno
Moto-Uno
Just to remind you of "Segetis' " remark concerning the polarizing effect with
wider angle lens .With a polarizer on my Bronica ETR 40mm the varying effect across the sky is hard to dismiss.
Regards,Peter
wider angle lens .With a polarizer on my Bronica ETR 40mm the varying effect across the sky is hard to dismiss.
Regards,Peter
Markus
Established
I know this effect and I agree with you. Sometimes I like this effect especially when there is a lot of blu sky in the picture. And I could use the filter on the 50mm too 
EDIT: The best (cheapest) solution for me would be an adaptorring.
EDIT: The best (cheapest) solution for me would be an adaptorring.
rlouzan
Well-known
Buy a warm polarizer filter or the most neutral you can find, either linear or circular. Don't over polarize you pictures!
fbf
Well-known
They sell for about $100 on ebay used. No need to buy new ones.
Moto-Uno
Moto-Uno
I hope someone will respond as I'm thinking of getting one for mine and I have no idea as to how it functions either.Peter
davidpg
Newbie
The polarizer is not meant to cover the viewfinder window. You just look through it by peeking over the camera body, adjust the rotation and swing it back over the lens. It's a little bit clumsy, but it works fine.
David
David
EdSawyer
Established
What david said
What david said
yeah, don't bother trying to use the viewfinder to look through the polarizer. Just eyeball it to get correct polarization.
For metering, I usually dial in 1 2/3 to 2 stops compensation using the exposure compensation dial. (e.g. overexpose 1 2/3 to 2 stops when using the filter).
What david said
yeah, don't bother trying to use the viewfinder to look through the polarizer. Just eyeball it to get correct polarization.
For metering, I usually dial in 1 2/3 to 2 stops compensation using the exposure compensation dial. (e.g. overexpose 1 2/3 to 2 stops when using the filter).