Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 70,501   Posts: 1,543,369   Online: 816
      
Results 1 to 10 of 10
  1. #1

    Join Date
    May 2005
    Shooter
    4x5 Format
    Posts
    183

    Multi Coated Enlarging Lenses???

    I just saw a reference in the archives suggesting that enlarging lenses aren't multi-coated. Is this true? If so, why? I would think that reducing flare would be a great thing for enlarging lens?

  2. #2
    ic-racer's Avatar
    Join Date
    Feb 2007
    Location
    Midwest USA
    Shooter
    Multi Format
    Posts
    6,216
    Most (or all) of mine are multicoated. From the Schneider site:

    High-performance is a challenge that must
    be met on a continuing basis. This require-
    ment is met by selecting lens elements made
    of high-grade glass, adding proprietary
    multilayer coatings to the finished lenses,
    and assembling them in a high-quality lens
    mount. The ability to manufacture high-quality
    lenses year after year have established
    Schneider as a dependable supplier of pro-
    fessional enlarging lenses world wide.
    Last edited by ic-racer; 10-03-2009 at 03:44 PM. Click to view previous post history.

  3. #3
    AgX
    AgX is offline

    Join Date
    Apr 2007
    Location
    Germany
    Shooter
    Multi Format
    Posts
    8,595
    The more elements, the more important any anti-reflective means becomes (to put it very simple).

    This should be apropriate for all kind of lenses.

  4. #4

    Join Date
    Nov 2007
    Location
    Tacoma, WA
    Shooter
    Multi Format
    Posts
    560
    The older ones aren't of course. Probably back in the day before people could easily afford a Rodagon or Nikkor it was common to use older cheap enlarger lenses that were single coated.

  5. #5
    Chazzy's Avatar
    Join Date
    Jan 2004
    Location
    South Bend, IN, USA
    Shooter
    Multi Format
    Posts
    2,852
    Images
    5
    Frankly, I've never thought about this before. For how long have Rodagons, Componon-S, and Nikon enlarging lenses been multicoated? I've just assumed that any lenses that are at all recent are multicoated, but that might be a dangerous assumption.
    Charles Hohenstein

  6. #6

    Join Date
    May 2005
    Shooter
    4x5 Format
    Posts
    183
    ic-racer,

    good point. i should have checked the Schneider site. sure makes sense to me.

    thanks

  7. #7

    Join Date
    Jan 2006
    Shooter
    Medium Format
    Posts
    14
    Although "multi-coating" was invented by Zeiss in the early 1940s, it didn't make it into camera lens general usage until the mid-1970s [when Pentax figured out a cost-effective manufacturing technique]. On a 4 or 6 element enlarging lens, by design not subject to use with flaring light sources, its practical image impact over single-coat usage is nearly insignificant. It was probably introduced more for marketing purposes than performance, although multicoated lenses should produce slightly higher printing contrast.

  8. #8
    Ian Grant's Avatar
    Join Date
    Aug 2004
    Location
    West Midlands, UK, and Turkey
    Shooter
    Multi Format
    Posts
    16,264
    Images
    148
    Multi coating wasn't invented by Zeiss.

    But Zeiss were definitely heavily coating some lenses before WWII.I've seen a coated 1939 150mm Tessar.

    However I think Taylor, Taylor, Hobson (Cooke) in the UK were ahead in coating technology.

    Ian

  9. #9

    Join Date
    Aug 2008
    Location
    S Florida
    Shooter
    Multi Format
    Posts
    158
    I think Randy was speaking about true interference coatings for things like UV and such, and in that regard he is correct it was Zeiss but if memory serves it was sometime even earlier on. Taylor and Hobson may have had some advancements in coatings but Zeiss was an earlier purveyor. I don't know when or by who an actual coating was invented by for a piece of glass. Maybe the Zeiss website would have info on that.

  10. #10

    Join Date
    Jun 2004
    Location
    Portland, OR
    Shooter
    4x5 Format
    Posts
    3,268
    Quote Originally Posted by Neil Poulsen View Post
    I just saw a reference in the archives suggesting that enlarging lenses aren't multi-coated. Is this true?
    Neil - it just goes to show that one can't trust everything they read on the Interweb. Even if it is on APUG...

    :^)

    Kirk
    Kirk

    For up from the ashes, up from the ashes, grow the roses of success!



 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



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