Best lenses for slide projectors

Discussion in '35mm Cameras and Accessories' started by superflash, May 22, 2017.

  1. superflash

    superflash Member

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    If I use a modern high resolution lens ( like Otus, Sigma Art etc... ) and a ultra-high resolution films for chromes on a film camera, is there a projection lens that manages to see on the screen all the details impressed on that film (for ex. leica-pro, rollei apogon etc...)? Or does exist an adapter that allow us to mounts a camera lens on a slide projector?
    Do someone of you have some experiences with it?
     
  2. bdial

    bdial Subscriber

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    Some lenses are better than others, of course, but I don't think the lens is the limiting factor. I'd expect The screen and viewing distance are probably going to outweigh what the lens can produce for detail , for example.
     
  3. MattKing

    MattKing Subscriber

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    A projection lens should be a lot easier to design than a lens used to photograph images.
    The range of suitable magnifications is predictable. The light source should be collimated and relatively free of extraneous, flare creating light.
    Essentially, projection lenses are like enlarging lenses, except for different magnification.
     
  4. AgX

    AgX Member

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    There a few top lenses, however near top lenses could be got dirt cheap with old projectors.

    The problem though with many (also modern) lenses is the fit. Even if the threading fits there still may be a front part of the barrel that makes it stuck. Also one may not switch lenses deliberately as the condensor must be apt for that focal length.


    With used taking lenses so cheap, they might be an alternative. But trouble likely will be making them fit mechanically as optically.
     
    Last edited: May 22, 2017
  5. Chan Tran

    Chan Tran Member

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    The trouble with slide projector is that it's difficult to get the entire slide in focus. The slide curves slightly enough to cause part of the slide to be out of focus. I have tried Kodak curve field lenses and flat field lenses and they have about equally the same.
     
  6. AgX

    AgX Member

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    The Leitz curved field lens was designed for those cardboard Kodachrome frames, as far as I know.
    With frames that hold the film by lateral tension no misforming should take place and a standard flat field lenses should be fine.
     
  7. RichardJack

    RichardJack Subscriber

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    I have the Leitz for my Kodak projector and it's not really better than a Kodak or Sawyer. What I did find that helps with any lens is to build and install a lens stop reducing your projector lens to f5.6 or f8. Your projection will be darker but your eyes will adjust. But what you'll have is better DOF and your corners will look as good as your centers. The problem is not the lens it's the slide, they all vary.
     
  8. OP
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    superflash

    superflash Member

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    Here we are, sorry for the delay. I'll go in order to answers:

    bdial: thank you, you have reason, the screen is important, what is the best? No-beaded screen are better for deatils? And viewing distance is right: in common house distances are not long, so if you want to see very sharp with medium screen, it's occurs a huge analog resolution.

    MattKing: certainly, most of projection lenses are simple triplets, but they are not good, so we need lenses a little bit complex ( for ex. Elmarit pro 150 has some glasses used on 180/2 APO for Leica R.

    Agx: yes, yours is excellent tip, we have to also consider the lens damper (another problem...)

    Chan Tran: yes, sure, to avoid popping it's need a good cooling system, and to enlarge DOF a variable diaphragm lens

    RichardJack: if you use a f8 or 5,6 and the screen is big , is necessary a power projector as simda 3462, Ektapro 9020 with high-light or Carousel 2055 with booster, otherwise slides are too dark.

    But anyway, do you know how it can possible to find tests, articles or review of best projection lenses?



     
    Last edited: May 23, 2017
  9. AgX

    AgX Member

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    Concerning screens: new they are rather expensive, though you typically only get some sheet of plain PVC.
    My advise is to buy used amateur screens in various tastes and get a feeling for the characteristic of the various surfaces.
    Keep in mind though that there are fashions in screens. The common surfaces from the 70s are typically no longer manufactured.

    Concerning lenses: fellow member Henning Serger wrote about lenses, maybe you can find here what he said about this issue.
     
  10. OP
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    superflash

    superflash Member

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    Thank you again for your advise, AgX.
    I have sought Henning Serger's posts and they are very useful.
     
  11. jtk

    jtk Subscriber

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    In the 70s, some of us simply knocked the optics out of Kodak's black plastic focusing tubes and installed (very easy) various enlarging lenses...or, for ultimate resolution, the 63mm Nikor macro lens. And of course, we used glass mounts, such as GEPE, to keep the film flat.
     
  12. OlyMan

    OlyMan Member

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    Depending on the model of projector in use, decent OEM lenses can now be bought stupidly cheaply if you watch the market for a while. I'm on the lookout for a Kodak 60mm PC lens to go with the mint boxed one I managed to buy last week for the price of a burger and fries. There are some dreamers that still think their lenses are worth $$$ despite the number of enthusiasts still interested in analog projection must surely be down to penny numbers. If I ran eBay, they and their likeminded brethren would get one free re-listing before they had to start paying for the privilege of filling my servers with their over-priced crap that won't ever sell.
     
  13. Jens Hallfeldt

    Jens Hallfeldt Member

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    +1

    Very good lenses are:
    Carl Zeiss P-Sonnar T* 2,5/90mm
    Leica Super-Colorplan P2 2,5/90 MC
    Rollei AV-Apogon 2.8/120mm
    Doctarlux 2,5/70mm (rare)

    I bought two Zeiss-Ikon Royal AF selektiv projectors, one with the P-Sonnar 90mm and one with 2.8/60mm for 50 Euro each. The P-Sonnar is really great, the 60mm is not on that level...

    Best
    Jens
     
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  15. darkroommike

    darkroommike Subscriber

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    What projector? Most projectors get hot enough that the slides "pop" so a good AF projector and a curved field lens work well. If you have a good AF Carousel projector you can fit a Leica projector lens (good luck finding one!) or a Golden Navitar, Kodak was at one time the industry standard for AV multi media productions and everything was to the Kodak standard. (Psst-I bet Leica did not build their projector.)

    https://www.ebay.com/itm/LEICA-LEITZ-PRADOLUX-RT-300-SLIDE-PROJECTOR-/332488844839

    https://www.ebay.com/itm/Golden-Nav...207197?hash=item41c83b5a5d:g:~qkAAOSwXY5ZRsVD
     
  16. AgX

    AgX Member

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    None of their two round-tray projectors were built by Leitz. The 35mm version was made by Kodak and seemingly only directed at the US-market. Leitz' straight-tray projectors do not even accept round trays as alternative. Some german competitors made projectors that can do so. But in general Germany can be called straight-tray land.
     
  17. jtk

    jtk Subscriber

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    If the transparency is valuable the smart (professional) thing to do is to duplicate it and project the dupe, rather than exposing the original to handling and heat risk.
     
  18. Chan Tran

    Chan Tran Member

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    Kodak Ektapro uses tray and they were made in Germany but don't know if Kodak made them in their factory or contract them out.
     
  19. AgX

    AgX Member

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    Kodak Carousel projectors are rather rare here in Germany, they typically were used commercially.
     
  20. OlyMan

    OlyMan Member

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    That's ironic...the European carousels were completely different products to the American carousels and they were all made in Stuttgart. I'd have thought you guys would be virtually falling over piles of them.
     
  21. Sirius Glass

    Sirius Glass Subscriber

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    First of all it depends on the usual projection distances that you will use. If you use several you many want a zoom lens or have several lenses.
     
  22. AgX

    AgX Member

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    But basically, as with taking lenses, there are certain lens designs and there are focal lengths.

    The most common types in modern slide projectors are 4-elements lenses, that are similar to the Tessar type. The high-end lenses are more complex. In any case they are at least of 4 group design. And thus can be distinguished.
     
  23. OP
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    superflash

    superflash Member

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    Consider this question:
    wide angle projection lenses are worst than normal and tele lenses?
    Among medium format lenses what are wide?
    I know Zeiss 75mm P-distagon for PCP80; Apogon 90mm and Schneider 90mm for rolleivision 66. Do you know others?
     
  24. Dan Fromm

    Dan Fromm Member

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    My 1"/2.8 Navitar and 38/2.8 Elmo PC lenses for Carousel standard projectors do very well in small rooms.
     
  25. Alan Gales

    Alan Gales Member

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    Back in the 80's I wanted a Leitz projector but couldn't afford it on a student budget. I ended up with a Kodak projector but bought a Schneider lens for it. The pro shop where I bought it said the Schneider would rival the Leitz lens in quality. I was very happy with it but I didn't project individual slides very long at a time to keep them from getting hot. The Leitz projector was advertised as not heating up slides like the Kodak did.
     
  26. OlyMan

    OlyMan Member

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    Strange...I have never found that mine overheats the slides, but then again we got a completely different line of projectors compared to the the USA, designed and manufacturered by Kodak AG in Stuttgart, all based on the original 1963 Carousel Model S.
     
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