Archived posting to the Leica Users Group, 2003/12/07

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Subject: Re: [Leica] IR Infrared Filter
From: robertmeier@usjet.net
Date: Sun, 7 Dec 2003 19:41:25 -0600
References: <000101c3bd24$657c40a0$6501a8c0@dorysrusp4>

Don,

Thanks.   I will look for an IR 39mm filter.

Bob

> Robert,
> Yes, Leica did have IR filters for their lenses.  I have a chrome one
> for my DR and any other 39mm thread and one for my Summitar.  As you
> noted, focusing is a snap with a rangefinder and at the typical F8-11
> apertures changing the focus is not that big a deal.
> 
> As for where, I would try the usual suspects: Tamarkin, Rich at
> Photovillage, Sam at Classic Camera, and B&H.  If you want a modern
> filter then B+W will make one on special order.  I think it would be a
> 92 or so in their vernacular.
> 
> Don
> dorysrus@mindspring.com
> 
> -----Original Message-----
> From: owner-leica-users@mejac.palo-alto.ca.us
> [mailto:owner-leica-users@mejac.palo-alto.ca.us] On Behalf Of
> robertmeier@usjet.net
> Sent: Sunday, December 07, 2003 7:16 PM
> To: leica-users@mejac.palo-alto.ca.us
> Subject: Re: [Leica] IR Infrared Filter
> 
> Does anyone know if Leica ever made an infrared filter like the one
> Rollei
> made?   The Rollei filter is distinguished for two things:  it is all
> but
> opague, only passing the infrared wavelengths, and it is slightly ground
> to
> compensate for the different focus point needed for infrared light, so
> no
> compensation is needed on the focus setting.   Since with a Rollei, like
> a
> Leica, you don't view through the taking lens (and the filter), the
> opague
> filter works all right.  I would love to use such a filter on my
> Summircon
> 50, and I might have to tape my Rollei Bayonet II filter on to it (the
> diameters are just about identical).
> 
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In reply to: Message from "Don Dory" <dorysrus@mindspring.com> (RE: [Leica] IR Infrared Filter)