Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 70,540   Posts: 1,544,300   Online: 889
      
Results 1 to 4 of 4

Thread: Diopters

  1. #1

    Join Date
    Jan 2004
    Location
    Pacific NW
    Posts
    11
    Can anyone shed some light on this problem I am having. Just received a +2 diopter (without instructions) cannot figure out where it goes in the eyepiece, in front of or behind the lens that is already in there?
    thanks loads,

    Rene

  2. #2
    Ed Sukach's Avatar
    Join Date
    Nov 2002
    Location
    Ipswich, Massachusetts, USA
    Shooter
    Medium Format
    Posts
    4,520
    Images
    26
    Quote Originally Posted by 1manilaboy
    Can anyone shed some light on this problem I am having. Just received a +2 diopter (without instructions) cannot figure out where it goes in the eyepiece, in front of or behind the lens that is already in there?
    thanks loads,Rene
    The term "diopter" actually is a measure of lens curvature. It has come to mean, generally, a lens inserted into the viewing system to correct for vision anomalies. Chances are (~75% or so) it replaces the "standard" eyepiece lens - the one nearest the eye of the observer. In the Hasselblad prism, the "standard" eyepiece lens is removed - right hand thread - and the replacement screwed in.

    Depending, though - it may be an auxiliary lens that fits over the existing eyepiece lens.

    Careful, too - some of the so-called "Portrait" or "Close-Up" lenses are labeled in "diopters".

    What are the physical dimensions of this puppy?
    Carpe erratum!!

    Ed Sukach, FFP.

  3. #3

    Join Date
    Jan 2004
    Location
    Pacific NW
    Posts
    11
    Well, I tried removing the existing eyepiece lens and put in the diopter and all I had was a complete blurr. So I figured out how to add the diopter in front of the existing glass and what I got was a little worse than without the diopter, it measures about 1 inch in dia.

    Rene

  4. #4
    glbeas's Avatar
    Join Date
    Sep 2002
    Location
    Roswell, Ga. USA
    Shooter
    Multi Format
    Posts
    3,307
    Images
    109
    Well, unless you have glasses and your eyes are getting old and frail you probably don't need an eyepiece diopter. If this does apply to you then you would probably want one that approximated the diopter of your glasses. This is usually done because its kinda hard to look through some viewfinders with glasses on as you can't get your eye close enough to see the whole frame.
    At worst you can rig a mount to use the lens as a closeup add on.
    Gary Beasley



 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



Contact Us  |  Support Us!  |  Advertise  |  Site Terms  |  Archive  —   Search  |  Mobile Device Access  |  RSS  |  Facebook  |  Linkedin