43mm filter with 0.5mm thread pitch

[Guest JonathanP]

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Just wondered if anyone was aware of any suppliers of 43mm filters (clear or UV) in 0.5mm thread pitch?

 

I want to source one to use as a protection filter for a W-Nikkor 3.5cn f/1.8, but I believe early Summilux's may have also used the 0.5mm filter thread rather than the standard 43x0.75 used nowadays.

 

B+W used to have this as an option, but I have been in contact with Schneider HQ and they no longer supply or have stock of 43x0.5 filter rings. I also contacted Heliopan who I read in the past have made step down adapters from 46mm but they no longer offer this service.

 

I may have to find a machine shop to make me a 46x0.75 to 43x0.5 adapter as the best longer term solution. If anyone has any leads or other solutions I'd be most grateful,

 

Thanks,

Jonathan

 

[a.noctilux]

Hello,

 

I have one of those for my old Summilux 50mm, 46 to 43 bought some years ago:

http://www.koodinternational.com/stepping-rings/stepping-ring-43-46mm.html

 

Not specified, ask them if it's in 0.5mm or 0.75 for 43mm

 

Arnaud

[lct]

You just need a 13206 or YMZOO Leica filter. Hardly cheap though.

http://www.ebay.fr/itm/E43-YMZOO-13206-UVa-chrome-f-Leica-26157-7-/281809159655?hash=item419d2285e7:g:8fIAAOSwEetWBFMd

 

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[mike4321]

Jonathan,

Several years ago I was also looking for a 43/0.5 UV filter, for my old 50mm Summilux, which has 0.5mm pitch.  I found that the readily-available B&W 43 010 UV-Haze filter worked, although the thread pitch is 0.75mm.  It screwed all the way down to a hard stop without binding, and goes on and off easily.  Maybe I was just lucky.  There's the added advantage of being able to use a 43/46 step-up ring with 0.75mm threads on top of the UV. 

- Mike

[Guest JonathanP]

Thanks for all the great suggestions, I've managed to track down a 13206 filter which will do the job,

 

Cheers,

Jonathan

[menos I M6]

For the few lenses I have with this now unusual filter thread I have found these solution:

 

- use regular current B+W E43 filters and only loosely thread them in (they fit secure enough to not get lost yet do not damage any threads if not over-tightened )

- buy vintage filters like Nikon filters or Walz filters made for Nikon and change the glass (these are by far not as nice as the B+W filters as they are made of aluminum alloy and will not be as smooth to use as the B+W brass filters)