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Maybe just for 1% of the people here....
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PostPosted: Sat Mar 13, 2010 7:01 pm    Post subject: Maybe just for 1% of the people here.... Reply with quote

My friend Marco Cavina just published an article (in Eglish!!) on early wide(st) angle lenses like the PERIMETAR and SPHAEROGON:
http://www.luciolepri.it/lc2/marcocavina/articoli_fotografici/CZJ_Perimetar_Sphaerogon_Pleon/00_pag.htm

Hope you like it as much as I do....


PostPosted: Sat Mar 13, 2010 7:13 pm    Post subject: Reply with quote

fascinating reading, but I lack the background to understand it in all its detail.
Any speedup reading recommended on lens-formula as presented in the article?


PostPosted: Sat Mar 13, 2010 7:17 pm    Post subject: Reply with quote

Awesome! Very interesting early progression of wide-angle lens design.

Thanks for the link.


PostPosted: Sat Mar 13, 2010 7:36 pm    Post subject: Reply with quote

Rense wrote:
fascinating reading, but I lack the background to understand it in all its detail.
Any speedup reading recommended on lens-formula as presented in the article?


Sidney F Ray "The Photographic Lens"


PostPosted: Sat Mar 13, 2010 7:59 pm    Post subject: Reply with quote

thanks Klaus, will look it up in the library.


PostPosted: Sat Mar 13, 2010 8:03 pm    Post subject: Reply with quote

Hi,

Rense wrote:
fascinating reading, but I lack the background to understand it in all its detail.
Any speedup reading recommended on lens-formula as presented in the article?


+1

kds315* wrote:
Sidney F Ray "The Photographic Lens"


Thanks for the hint ...


PostPosted: Sat Mar 13, 2010 8:09 pm    Post subject: Reply with quote

Well, if you want to play around with optics, the free software by LINOS(ex Rodenstock)
WINLENS is great for beginners: http://www.winlens.de/


PostPosted: Sat Mar 13, 2010 8:26 pm    Post subject: Reply with quote

that will keep me playing for a while. Thanks!


PostPosted: Sun Mar 14, 2010 7:55 am    Post subject: Reply with quote

Nice links, thank you.

Finally a lens Arsenal doesn't have. Smile


PostPosted: Sun Mar 14, 2010 1:26 pm    Post subject: Reply with quote

Thank you Klaus, very interesting article.

kds315* wrote:
Rense wrote:
fascinating reading, but I lack the background to understand it in all its detail.
Any speedup reading recommended on lens-formula as presented in the article?


Sidney F Ray "The Photographic Lens"

If I may, I'd like to add a couple of books that I found useful:

Arthur Cox: Photographic Optics (Focal Press)

Rudolf Kingslake: A History of the Photographic Lens (Academic Press)

Cheers!

Abbazz


PostPosted: Sun Mar 14, 2010 2:07 pm    Post subject: Reply with quote

Both very good books too Sebastien!

Last edited by kds315* on Sun Mar 14, 2010 11:43 pm; edited 1 time in total


PostPosted: Sun Mar 14, 2010 5:38 pm    Post subject: Reply with quote

impressive


PostPosted: Sun Mar 14, 2010 5:40 pm    Post subject: Re: Maybe just for 1% of the people here.... Reply with quote

kds315* wrote:
My friend Marco Cavina just published an article (in Eglish!!) on early wide(st) angle lenses like the PERIMETAR and SPHAEROGON:
http://www.luciolepri.it/lc2/marcocavina/articoli_fotografici/CZJ_Perimetar_Sphaerogon_Pleon/00_pag.htm

Hope you like it as much as I do....


I've just quickly skimmed though this and it looks fascinating - I must make time to read it carefully. One small point about the Meyer 1929 design with the "ccx" military code - am I corerct in thinking that must mean such lenses were being made well into WWII after the adoption of the anonymising letter codes?

Thanks for flagging this article for us, Klaus!


PostPosted: Sun Mar 14, 2010 7:55 pm    Post subject: Reply with quote

Completely fascinating...I stopped everything and read it through! Shocked Wow, what a flock of dedicated geniuses!


PostPosted: Sun Mar 14, 2010 11:26 pm    Post subject: Reply with quote

I wish I could understand some of it. Once math rears its head I am done for (High School calculus was my limit)


patrickh