« previous next »
Pages: [1]   Go Down

Author Topic: Dual Convex Single Element on a Speed Graphic  (Read 1371 times)

David Bardes

  • 35mm
  • *
  • Posts: 11
    • David Bardes Photography
Dual Convex Single Element on a Speed Graphic
« on: August 27, 2014, 06:07:06 PM »
I taped a 75mm dual convex lens element on to a foam core lensboard and strapped it onto a Speed Graphic. The Focal Length is about 300mm, and the f-stop is about f4. Shutter speeds are approximate as the focal plane shutter on this early Speed Graphic has not been tested. Lots of fun!
Logged

mcduff

  • Self-Coat
  • *****
  • Posts: 867
  • Loving the 645...
    • ...on Flickr...
Re: Dual Convex Single Element on a Speed Graphic
« Reply #1 on: August 27, 2014, 06:29:16 PM »
Those look awesome
Logged
---------------
check out Don's stuff at http://www.flickr.com/photos/mcduffco/

rotarysmp

  • 120
  • **
  • Posts: 151
    • RotarySMP
Re: Dual Convex Single Element on a Speed Graphic
« Reply #2 on: September 12, 2014, 10:30:32 PM »
I did something similar, but used both rolleinar close up lens back to back across a 3mm aperture. Made an amazingly sharp contact print on 4x5.
Logged
Best regards, Meilleures salutations, Mit freundlichen Grüßen, Cu salutari
Mark
https://www.youtube.com/c/RotarySMP

jojonas~

  • Self-Coat
  • *****
  • Posts: 2,928
  • back at 63° 49′ 32″ N
    • jojonas @ flickr
Re: Dual Convex Single Element on a Speed Graphic
« Reply #3 on: September 15, 2014, 09:22:46 PM »
inspiring! I have good hopes for creating my own 4x5 camera in due time~
Logged
/jonas
Pages: [1]   Go Up
« previous next »