Re: Focus corrected IR-filter (was: Another New Subscriber

["Willem-Jan Markerink" <w.j.markerink@xxxxx>]

On  8 Dec 96 at 18:35, jdgoff@xxxxxxxx wrote:

> I have a small booklet that was packed with the Rollei I purchased in 1952
> that clearly described the IR filter as focus corrected. I have never seen
> one, but have been on the look-out for one for the last year. I suspect they
> would be expensive and rare. If affordable, this filter would help in one

I am not sure about the rare, but I doubt they will be expensive
just because of this focus correction. This fact is just too little
known; I only know because Joe Berenbaum (not on the list for the
moment) pointed me to a chapter in a Rollei book. I doubt it is
known beyond the level of people who read this book. 


> way I use the Rollei with IR. I make panoramic photos using the Rollei Pan
> head. It would be nice to frame/focus through the upper lens without the
> bother of mounting/unmounting a filter for each shot in the series...James

Have you checked the IR panorama's on my homepage, made with a 
Horizon 202?....;-)) 
http://www.a1.nl/phomepag/markerink/mainpage.htm

And why not use a small aperture, since you are using a tripod
anyway? Or are these long tele panorama's? 
And regardless of that, you still end up with focus 'jumps' at the
edges, right? 
--
Bye,

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      The desire to understand 
is sometimes far less intelligent than
     the inability to understand


<w.j.markerink@xxxxx>
[note: 'a-one' & 'en-el'!]

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Topic No. 19