Condenser / lamp distance

Barn and Silo

H
Barn and Silo

  • 3
  • 0
  • 39
Awaiting light

D
Awaiting light

  • 1
  • 0
  • 28
Dusk in the Rockies

A
Dusk in the Rockies

  • 3
  • 0
  • 97
Under A Raven Sky, 2025

A
Under A Raven Sky, 2025

  • 6
  • 1
  • 97
Pond and trees

H
Pond and trees

  • 5
  • 0
  • 64

Recent Classifieds

Forum statistics

Threads
200,347
Messages
2,806,507
Members
100,220
Latest member
Michaelopus
Recent bookmarks
0

richard ide

Member
Joined
Nov 8, 2005
Messages
1,217
Location
Wellington C
Format
Multi Format
I am using the head of an Opticopy camera/enlarger for 8" x 10" enlarging. It has both point and diffuse light sources and an amazing set of condensers. The beast was designed for using a 360mm Componon S. I do not have the electronic package for control, and access to the track the light socket is on is a PITA to use in the dark.
Can anyone give me a formula for calculating lamp/condenser distance for a particular magnification ratio. I have enough room in my darkroom to enlarge up to about 40X.

Thank you
 
Photrio.com contains affiliate links to products. We may receive a commission for purchases made through these links.
To read our full affiliate disclosure statement please click Here.

PHOTRIO PARTNERS EQUALLY FUNDING OUR COMMUNITY:



Ilford ADOX Freestyle Photographic Stearman Press Weldon Color Lab Blue Moon Camera & Machine
Top Bottom