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Thread: Lens flare in a Velostigmat W.A. Is that normal?

  1. #11

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    Re: Lens flare in a Velostigmat W.A. Is that normal?

    Sadly, that kind of flare comes with uncoated lenses. I learned that in 1981 trying to make a back-lit photo with a 12"/4.5 Velostigmat, also uncoated. (That's a Tessar design.) Don't know how you'll get around it; it seems that small wide-angle lenses for 8x10 are few, and coated ones are fewer. Perhaps a 190mm Kodak Wide Field Ektar; it should cover whole plate. They're not exactly common, though.

  2. #12

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    Re: Lens flare in a Velostigmat W.A. Is that normal?

    Mark the Series IIIa EXWA Velostigmat f/12.5 is a symmetrical lens consisting of two cemented doublets either side of the stop. Similar in design to a Cooke Covertible Series XV. It's design has been discussed before.

    http://www.largeformatphotography.in...23#post1134623

  3. #13
    loujon
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    Re: Lens flare in a Velostigmat W.A. Is that normal?

    Quote Originally Posted by Roger Hesketh View Post
    Mark the Series IIIa EXWA Velostigmat f/12.5 is a symmetrical lens consisting of two cemented doublets either side of the stop. Similar in design to a Cooke Covertible Series XV. It's design has been discussed before.

    http://www.largeformatphotography.in...23#post1134623
    This is not true Roger. The Series III 6 1/2 " f9.5 is same or similar to the cooke XV glass layout while the Wollensak Series IIIa 6 1/2" f12.5 is a more simple glued pair one either side of the stop more like a rapid rectilinear design. It does have larger coverage then the Series III f9.5 though less corrected particularly at the extreme of the IC.

  4. #14

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    Re: Lens flare in a Velostigmat W.A. Is that normal?

    Louis that was what I found when I took it apart. It was not the 6 1/2 in version of the lens though. It was I think the 90mm. Though it could have been the 105mm. It was however over 10 years ago that I did that so I cannot now be sure which focal length it was now but I know it was not the 6 inch verion of the lens as I have never owned one of those.

  5. #15
    Mark Sawyer's Avatar
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    Re: Lens flare in a Velostigmat W.A. Is that normal?

    Quote Originally Posted by Louis Pacilla View Post
    This is not true Roger. The Series III 6 1/2 " f9.5 is same or similar to the cooke XV glass layout while the Wollensak Series IIIa 6 1/2" f12.5 is a more simple glued pair one either side of the stop more like a rapid rectilinear design. It does have larger coverage then the Series III f9.5 though less corrected particularly at the extreme of the IC.
    Could the Wollensak f/12.5 EWA be considered the last of the Wide Angle Rectilinears? It has the right layout and behaves like one, and it came out at the right time, (while Wollensak and others were still making RRs and WARs) so sounds as though it might...
    "I love my Verito lens, but I always have to sharpen everything in Photoshop..."

  6. #16

    Re: Lens flare in a Velostigmat W.A. Is that normal?

    I see that Surplus Shed has a CD on sale that has 600 Wollensak lens diagrams including Velostigmats and Raptars. I'm tempted.

  7. #17

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    Re: Lens flare in a Velostigmat W.A. Is that normal?

    Chauncey, thanks for that news. Ridiculous price. Want to go halves on one?

  8. #18

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    Re: Lens flare in a Velostigmat W.A. Is that normal?

    Click image for larger version. 

Name:	Royal_f9.5.jpeg 
Views:	14 
Size:	78.8 KB 
ID:	169166Just for historical purposes, the f9.5 wide angle is a very old design, but not necessarily bad. It was introduced by the Rochester Lens Company as the Royal Anastigmat Wide Angle around 1902.

    When Wollensak bought the Rochester Lens Company in 1905 they became owners of all the lens designs and intellectual property. Wollensak used the Royal Anastigmat name until about 1908, when they introduced the Velostigmat line. The 1907 Wollensak catalog at Camera Eccentric shows the f9.5 wide angle under the Royal Anastigmat name.

  9. #19

    Re: Lens flare in a Velostigmat W.A. Is that normal?

    I see that the $19 sale price ended August 31. Oh well, it may return.

  10. #20

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    Re: Lens flare in a Velostigmat W.A. Is that normal?

    Quote Originally Posted by Two23 View Post
    Velostigmats were uncoated. After WW2 they were coated and they changed the name to Raptar. I mostly shoot uncoated lenses and generally avoid having the sun in the shot.
    Kent in SD
    +1

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