View attachment 1547699
Hello Everyone,
I have the pleasure of presenting a review of Holger Merlitz's new book in English: The Binocular Handbook: Function, Performance & Evaluation of Binoculars
I hope you find it informative.
Kind Regards,
Neil.
Interestingly Amazon Germany so far didn't manage to send me my copy (that I ordered months ago).
Oh well.
Hermann
"Holger believes there are no binoculars containing Uppendahl prisms, but I have heard it on good authority that the little Leica Ultravid 8x and 10 x 25 may still be using such prisms."I hope you find it informative.
I cancelled my order from Amazon UK because there is still no ETA and got the eBook version from Apple Books instead. In that version, there is an oddity: the foreword is clearly by Neil English but the bottom credits say "Holger Merlitz, Fintry, Scotland, UK, June 20, 2023" instead. At first, with the mention of Scotland I thought it may have been the late lamented Lee who'd written the foreword.
In regard to Uppendahl prisms . . .
A) As used in the second generation version of the Leica Geovid rangefinder binocular:
View attachment 1548034
The most recent body upgrade to the Geovid R is shown at: Upgraded Leica Geovid R Rangefinder Binoculars
B) And considering various claims as to the difficulty of manufacturing Uppendahl prisms, perhaps somewhat surprisingly,
Leica also uses the prism in their current 7x24 Rangemaster monocular rangefinder
(Leica used the more obscure Leman prism in a modified 2 piece form, in the earlier 7x21 version of the Rangemaster).
See both posts #9 and #14 (with the images in the intended order) at: Roof Prisms Used in Binoculars
John
p.s. There are three generations of Geovid RF binoculars, using different types of prisms (along with other components).
The first used Porro prisms, the second Uppendahl prisms, and the third Perger prisms.
Both the second and third generations are currently in production.
(See images of all 3 in post #251 at: 6 January 2022 - New Leica announcement )
No, it's mysterious. The comment suggested actual difficulty of production, not just cost and price point.If there are Uppendahls still in production, I don't understand Leica's lamentation about the difficulty of using these prisms in their Retrovid models.
It’s arrived, only a tiny peek before wrapping it up. Looks like a very interesting book, will enjoy reading next week!Amazons shipped, amazons shipped! Now I can wrap it and give myself (another) xmas present!
Peter
Hi Dipperdapper,View attachment 1547699
Hello Everyone,
I have the pleasure of presenting a review of Holger Merlitz's new book in English: The Binocular Handbook: Function, Performance & Evaluation of Binoculars
I hope you find it informative.
Kind Regards,
Neil.