Filters for Caltar-IIN 360mm and 240mm?

[wilsonneal]

I am using Caltar II-N lenses for my 8x10 C1, the Caltar II-N 360 and 240 (made by Rodenstock). Both of these take enormous filters both front and rear. The front thread on the 360 is 112mm and the 240 is only slightly smaller. I have the compendium hood and that has a slot on the side that I can slide a filter into. A 4"x4" gel is actually not as large as the filter ring. It is larger than than the glass surface, but just barely. And, not sure how I would guarantee the filter was positioned properly over the lens using the compendium with such tight tolerances. Anyone using rear filter holders with these lenses? They're huge in back, too. Looking at the rear, I am not sure that the depth of those rear filter holders will work here.

Does anyone else here have these lenses and what filters are you using? Primarily I am shooting b/w, so really just after a few filter choices like yellow, red, yellow-green.

Thanks for any advice.

Neal Wilson

 

[kjsphoto]

I have the same 360 a monster. Did you ever find what to do about filters? Anyone???

 

[dphphoto]

The 240mm takes 86mm filters on front (just like the 300mm Caltar II N that I have). You should be able to find filters on eBay at around $30. each, which isn't too bad if you only need a few. Dean

 

[kjsphoto]

Any ideas on the 360? Anyone?

Thanks,

Kev

 

[vet173]

I use the lee system. Not cheap but very versitle. Do like I did and get a set used if possible (it's always possible) I got my setup for about 1/3 new price in excellent condition.

 

[rbarker]

B&H sells 6"x6" gels (special order), which would avoid the tight tolerance of 4x4s. A frame or attachment system for 6" filters is another question, though. Making a holder out of foam core that would simply slip onto the lens would work.

 

[Richard Kelham]

I use the lee system. Not cheap but very versitle.

Lee filters are 100mm wide which should give you plenty of room. They do an 86mm attachment.

Another alternative is the Cokin system: their Z pro filters are also 100mm wide – and they offer alternitive threads (0.75 and 1.0mm) for their 86mm attachment. If that is not enough they also do an
X pro system with filters 130mm wide. That would just about do for a serious wide angle lens too!