enlarging lens for medium format

Discussion in 'Darkroom Equipment' started by Bryan Murray, Oct 7, 2006.

  1. Bryan Murray

    Bryan Murray Member

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    What size enlarging lens should i buy to print both 6x6 and 6x7 medium format negatives? I have an omega D5 4x5 enlarger. Can i use one lens for both sizes?
    thanks,
    bryan
     
  2. Kevin Caulfield

    Kevin Caulfield Subscriber

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    I believe a 75 or 80mm lens would be sufficient for both sizes.
     
  3. pgomena

    pgomena Member

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    You will need a focal length of 100mm to cover the 6x7cm negative adequately. It also can be used for the 6x6. I use my 100mm Schneider Componon-S for 6x9cm to 6x6 cm even though 105mm is often recommended for 6x9. I find no coverage or sharpness problems in the corners of moderate enlargements. You should be able to find a 105mm Nikon enlarging lens very easily on the used market.

    Peter Gomena
     
  4. MattKing

    MattKing Subscriber

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    IMHO a 90mm lens will have enough coverage for a 6x7 negative, and many 80mm lenses will be acceptable as well. 100mm or 105mm gives you some extra wiggle room.
     
  5. raucousimages

    raucousimages Member

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    I use a 80mm Rodagon for 6x6 and 6x7 with no problems but I usualy crop a bit. I think 6x7 is the limit for that lens. I would like to go to 105mm to be safe.
     
  6. Konical

    Konical Subscriber

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    Good Morning, Brian,

    For many years, I used an old 80mm Componon for both 6 x 6 and 6 x 7. Coverage was adequate--but just barely--for the 6 x 7. I currently use a 75mm El-Nikkor for 6 x 6 and a 90mm Omegaron for 6 x 7. A 100mm or a 105mm has excess coverage for 6 x 7, but comes in handy for the occasional 6 x 9 negative.

    Konical
     
  7. craigclu

    craigclu Subscriber

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    If you can find a Componon APO 90, it will do well at this duty and be an ideal solution. If you are patient, you can pick up a good example used without spending too much. I tend to leave mine on for everything from 645 through 67 and seldom feel a need for other focal lengths.