Author Topic: Lyman-Alpha II Experimental f1.1/90mm mirror lens (Read 11290 times)

Dr Klaus Schmitt · « **on:** October 22, 2018, 08:48:36 »

Found those lenses sold after a the US company NYE OPTICAL was dissolved after the owner and inventor Robert Nye deceased.

This one is a rather special f1.1/90mm catoptric mirror lens (i.e. no glass involved, only mirrors), Cassegrain design.

I had written about that before here: http://forum.mflenses.com/lyman-alpha-f1-1-90mm-catoptric-lens-t47139,highlight,%2Blyman.html

Now some first results after proper (infinity reaching) conversion on my Panasonic GH4, images selected for the special bokeh it has...

#1

#2

#3

#4

This lens allows to be used even below 200nm in UV (hence the name LYMAN ALPHA as this is the Hydrogen 121nm line), so more will follow
about the use in UV...

Dr Klaus Schmitt · « **Reply #1 on:** October 22, 2018, 09:52:44 »

And here about that rather unusual bokeh...

(one for Toby, I guess...)

Birna Rørslett · « **Reply #2 on:** October 22, 2018, 09:57:15 »

Our dear Jakov would go wild with such a lens.

John Geerts · « **Reply #3 on:** October 22, 2018, 11:38:24 »

Really exceptional, especially the last one

Akira · « **Reply #4 on:** October 22, 2018, 12:14:45 »

Look like soap bubbles rather than doughnuts!

Amazing tool for the exstreme abstraction!

Jakov Minić · « **Reply #5 on:** October 22, 2018, 12:21:27 »

Birna, you are right, I am craving!!!!
That is what I call a bokeh, I love it!
I am really impressed!

Frank Fremerey · « **Reply #6 on:** October 22, 2018, 12:28:30 »

Never seen anything like that before. Interesting, but not for me. Happy to see you grow on this lens. More results?

Thomas Stellwag · « **Reply #7 on:** October 22, 2018, 15:26:12 »

quite ashonishing pictures, Klaus, your sensor must get seasick

the first and the last are my favs

golunvolo · « **Reply #8 on:** October 22, 2018, 15:57:59 »

That´s an interesting way to see reality

Thanks Dr. Klaus for yet another one! I like them all

Dr Klaus Schmitt · « **Reply #9 on:** October 22, 2018, 16:39:07 »

Thanks guys! Indeed, quite an extreme lens this is...

Erik Lund · « **Reply #10 on:** October 24, 2018, 09:58:30 »

Must be quite intersting to look through the viewfinder

great images!

On a side note,,,A glassless lens, I wonder if this is what initiated all this I hear about mirrorless,,,

Dr Klaus Schmitt · « **Reply #11 on:** October 24, 2018, 21:46:26 »

Quote from: Erik Lund on October 24, 2018, 09:58:30

Must be quite intersting to look through the viewfinder great images!

On a side note,,,A glassless lens, I wonder if this is what initiated all this I hear about mirrorless,,,

Thanks Erik! Well it is not "glassless", as those two mirrors inside are made of a block of Schott ZERODUR
from what I know, which still is a special glass...