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  1. #1

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    Which 90mm lens has the shortest rear element?

    Hi, guys.

    Anybody know a decent 90mm that fits this bill?:

    --A rear element that's not much longer from the flange than that of the Symmar 110mm XL (i.e., stubby)
    --Coverage of 220mm or more.

    Thanks!

    Pete.

  2. #2
    Martin Aislabie's Avatar
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    According to the Schneider Data Sheet the 110XL extends only 19mm into the bellows (http://www.schneiderkreuznach.com/pd...mat_lenses.pdf)

    Rodenstock = http://www.linos.com/pages/no_cache/...sh=84e389c9e7#

    None of the current 90mm are that short - they are all 40+ mm.

    All will cover 220mm

    They are all great lenses

    Have fun

    Martin

  3. #3

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    Thanks, Martin.

  4. #4

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    Pete, I don't know if you've considered the 80mm XL Super Symmar. Smaller image circle, 212mm. But it's a cracking little lens. Just measured the rear element and it protrudes just under 12mm. Being a wider lens then a 90 this has got me out of trouble a few times when I couldn't get back far enough with the 90

  5. #5

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    Hi, Trevor.

    Yes, definitely considered the 80mm...the focal length is a bit too short for me to focus at infinity with my setup. Though, I might be able to do some mods to get there.

    Much appreciated.

    Pete.

  6. #6

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    Pete, can your setup take a suitable recessed lens panel?

  7. #7

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    Quote Originally Posted by Icescapes View Post
    Hi, Trevor.

    Yes, definitely considered the 80mm...the focal length is a bit too short for me to focus at infinity with my setup. Though, I might be able to do some mods to get there.

    Much appreciated.

    Pete.
    Can I ask why you're looking for a small rear element? I'm guessing you really should be asking about flange distance. For example the Nikon 90mm is I think a 98mm flange distance.

  8. #8

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    Yes, but it involves a digital application--I'll be careful here.

    So...I guess you could say that my film plane is further back from the rear-standard than would normally be the case, so it's causing me to focus wider lenses pretty snug with the rear-standard. I've been using a Fujinon 120mm f8.0 that has a rather long rear-element (nice hard to find lens with good coverage, up for sale soon). When focusing at infinity, the rear element actually enters the standard and bumps up against the sides when making lateral shifts.

    A recessed board doesn't help the situation, as it's not a question of how close I can bring the flange to the rear-standard, I'm good to go in that respect.

    I am going to make a few mods to shorten the distance from the back of the rear-standard to my film plane, in which case the 80mm XL might be an option as the flange (and hence, the rear element) won't have to be so close to the rear-standard then.

    Thanks,

    Pete.
    Last edited by Icescapes; 12-22-2008 at 06:33 PM. Click to view previous post history.

  9. #9
    David A. Goldfarb's Avatar
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    Lenses like the old 90mm/6.8 Angulon are very compact front and back, but may not be sharp enough for your application that dare not speak its name.
    flickr--http://www.flickr.com/photos/davidagoldfarb/
    Photography (not as up to date as the flickr site)--http://www.davidagoldfarb.com/photo
    Academic (Slavic and Comparative Literature)--http://www.davidagoldfarb.com

  10. #10

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    What kind of coverage are we talking on the older 90mm/6.8 Angulon?

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