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Do all roof prism binoculars have 4 lense objectives? (1 Viewer)
- Thread starter orbitaljump
- Start date
orbitaljump
Well-known member
Binoculars and Scopes
and their uses in photography for:
Astronomers
Sportsmen
Birdwatchers
Hikers and
Nature Lovers
Robert J. and Elsa Reichert
Modern Camera Guide Series
Chilton Company - Book Division
Copyright 1961
LOC Catalog no. 61-5626
I have a signed copy with both Robert's and Elsa's signatures. I think these folks are affiliated with Mirakel, out of New York.
and their uses in photography for:
Astronomers
Sportsmen
Birdwatchers
Hikers and
Nature Lovers
Robert J. and Elsa Reichert
Modern Camera Guide Series
Chilton Company - Book Division
Copyright 1961
LOC Catalog no. 61-5626
I have a signed copy with both Robert's and Elsa's signatures. I think these folks are affiliated with Mirakel, out of New York.
Last edited:
henry link
Well-known member
I didn't realize the Focalpin design went back as far as 1961. That makes it an even more interesting design for it's time.
I only recently bought a Kern 7x50 Focalpin after years of wondering just how good it was. Unbelievably, I ran into one that was actually NIB from the stock of a long defunct camera store in California. It dated from the last days of Kern in the late 80's and included an instruction booklet (printed in 1973), a yellowing warranty card to return to the long gone importer Karl Heitz in New York and, of course, a beautiful leather case and strap. All was apparently untouched as if from a time capsule..
I only recently bought a Kern 7x50 Focalpin after years of wondering just how good it was. Unbelievably, I ran into one that was actually NIB from the stock of a long defunct camera store in California. It dated from the last days of Kern in the late 80's and included an instruction booklet (printed in 1973), a yellowing warranty card to return to the long gone importer Karl Heitz in New York and, of course, a beautiful leather case and strap. All was apparently untouched as if from a time capsule..
orbitaljump
Well-known member
Sweet!
henry link
Well-known member
Henry,
It may have to do with the nature of the original prism patents. It would appear from this 1932 S&A catalog that the prisms were originally patented as "Dialyt-prisms" by Hensoldt (Swift & Anderson was their sole US distributor from 1926.) There is no mention of A-K, a designation that appears to have been introduced by Zeiss decades later. I guess one might question the primacy of "A-K," since Mr. Dialyt wasn't there to defend himself.
Note on pg. 3 "...The only Prism Binoculars in which the prism system may be removed intact, cleaned and replaced in case of emergency." These festideous people thought of everything. Any idea what $70 in 1932 would be worth today? :eek!:
Ed
Ed,
$70 in 1932 would be $1000 now according to one inflation calculator I Googled. Not cheap binoculars!
Henry
Kevin Purcell
Well-known member
Henry,
It may have to do with the nature of the original prism patents. It would appear from this 1932 S&A catalog that the prisms were originally patented as "Dialyt-prisms" by Hensoldt (Swift & Anderson was their sole US distributor from 1926.) There is no mention of A-K, a designation that appears to have been introduced by Zeiss decades later. I guess one might question the primacy of "A-K," since Mr. Dialyt wasn't there to defend himself.
From the monocular history side that Henry posted has this comments:
http://zeun.info/history/mono-history12.htm
Hmmm, so two elements of two lenses perhaps in the original Dialyt lens?
Also
http://zeun.info/history/mono-history15.htm
shows a couple of interesting things:
a porro monocular that focuses with the objective.
http://zeun.info/cz8x30co.htm
And perhaps an explanation for the odd placement of the tripod mount on the body of the prism housing rather than the end of the hinge. It was not common with porro monoculars!
http://zeun.info/atco6x30.htm
