Re: Largest, fastest wide angle lens for ULF?
Same as this?
https://www.ebay.com/itm/WWII-Milita...8AAOSwhTBa08il
If it's a "wide-angle window", it's a negative lens and won't form an image.
Re: Largest, fastest wide angle lens for ULF?
The very one. For more details, see the link in post #10 above.
Re: Largest, fastest wide angle lens for ULF?
Quote:
Originally Posted by
Mark Sawyer
That's exactly like what I held in my hands.
Jac may have something different.
Re: Largest, fastest wide angle lens for ULF?
Quote:
Originally Posted by
Randy Moe
That's exactly like what I held in my hands.
Jac may have something different.
Take a look at the discussion the link on post #10 above points to.
Re: Largest, fastest wide angle lens for ULF?
Quote:
Originally Posted by
Dan Fromm
Take a look at the discussion the link on post #10 above points to.
I have thrice
Let Jac speak for himself.
Re: Largest, fastest wide angle lens for ULF?
Thrice? Wow! Its been a while since I've seen the word.
Re: Largest, fastest wide angle lens for ULF?
Quote:
Originally Posted by
Dan Fromm
Thrice? Wow! Its been a while since I've seen the word.
As a child, I read the dictionary, but I am still a bad speeler and typist. :cool:
Re: Largest, fastest wide angle lens for ULF?
I am temporarily handicapped: I hope it is temporary (it is a periodic thing) so showing the window's image must wait until I have some help. I now have two of them, and for fun I'm speculating if I place them back-to-back they might make an interesting symmetric lens. :)
The inventor of this also patented a proper and huge lens based, in part, on my lens/window.
Dan: Thrice is a real word to us old (over 70 YO) proper English speakers. I know of no such in Canuck, my only vaguely familiar family language.
Re: Largest, fastest wide angle lens for ULF?
Quote:
Originally Posted by
Jac@stafford.net
...I now have two of them, and for fun I'm speculating if I place them back-to-back they might make an interesting symmetric lens. :)
As these are negative lenses, and since two negative lenses don't make a positive, I'm afraid not. Perhaps if you could separate positive elements it could be done, but I suspect these are single-element negative menisci. :(
Re: Largest, fastest wide angle lens for ULF?
Quote:
Originally Posted by
Mark Sawyer
As these are negative lenses, and since two negative lenses don't make a positive, I'm afraid not. Perhaps if you could separate positive elements it could be done, but I suspect these are single-element negative menisci. :(
I will disassemble the used one.
Here are some pics.
http://www.digoliardi.net/b-25/windoiw-pics/c.jpg
http://www.digoliardi.net/b-25/windoiw-pics/b.jpg
http://www.digoliardi.net/b-25/windoiw-pics/a.jpg
http://www.digoliardi.net/b-25/windo...stration-1.jpg