Hi there,
I was wondering whether you would recommend I get a polarizer for my "new" LF camera. I have always used them with my other cameras and on a sunny day like today, I wished I'd had one... Question is, which size do i need for a 150mm Xenar and where should I look for one?
Thanks for your help.
The thread size is 34mm.
A Schneider 150mm 4.5 Xenar for large format uses a 40.5mm screw-in filter. That is a standard size and companies like Heliopan make them in both linear and circular types. For this application you do not need a circular polarizer (we are not referring to the shape of the filter by circular).
The filter size of 34mm is for the 150mm 5.6 Xenar.
Got a ruler?
34mm= 1 5/16"
40.5mm= 1 9/16"
At least having the size in inches to compare you can tell which size to look for, after all that's 1/4" not an eyelash.
The figures aren't exact but 1/4" isn't etc.
Not according to the Heliopan and B+W filter guides.Originally Posted by dsim
Just a suggestion but if you think you will get other lenses, buy a larger filter and buy a step-up ring for your Xenar. No need to have more than one filter.
According to Schneider's lens info, the 150mm 5.6 Xenar has a 34mm filter size.
Also Kerry Thalman's info agrees with the Schneider site.
Mine disagrees. So does the B+W book and the Heliopan book. They both agree with each other. And he asked about the 150mm 4.5 not the 150mm 5.6.
Last edited by Bob Salomon; 17-Jun-2010 at 17:09.
Thanks Bob. Wouldn't be surprised if your info correct.
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