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Thread: Wide angle lenses for 8x10

  1. #31
    Steven Ruttenberg's Avatar
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    Re: Wide angle lenses for 8x10

    That looks cool. Any images of the sky you would share?

    Ebay has this one in a shutter for 580. Commercial Ektar 14 in. Lens

  2. #32

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    Re: Wide angle lenses for 8x10

    Quote Originally Posted by Steven Ruttenberg View Post
    Commercial Ektar 14 in.
    this tessar was a favourite of Youssuf Karsh, IIRC

  3. #33

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    Re: Wide angle lenses for 8x10

    The SSXL 150 is an incredible lens but because of the design, there is considerable light falloff and you will need a CF. They are expensive. 150mm is very wide for 8x10 and I ended up selling mine.


    Mosman, NSW (2014) by James Morris, on Flickr

  4. #34
    Angus Parker angusparker's Avatar
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    Re: Wide angle lenses for 8x10

    Quote Originally Posted by Hugo Zhang View Post
    SSXL 150mm?
    +1 Movements and not too big, the best modern WA lens for 8x10 IMHO...


    Sent from my iPad using Tapatalk Pro

  5. #35
    Angus Parker angusparker's Avatar
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    Re: Wide angle lenses for 8x10

    Quote Originally Posted by James Morris View Post
    The SSXL 150 is an incredible lens but because of the design, there is considerable light falloff and you will need a CF. They are expensive. 150mm is very wide for 8x10 and I ended up selling mine.


    Mosman, NSW (2014) by James Morris, on Flickr
    Light fall off doesnít bother me with B&W, probably would in color.


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  6. #36
    Steven Ruttenberg's Avatar
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    Re: Wide angle lenses for 8x10

    So many choices yet so little. I need to review the info provided here to make a decision. Probably 120-150 mm range and an extar 14in and Voigtlander 12in Universal Heliar.

  7. #37
    Steven Ruttenberg's Avatar
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    Re: Wide angle lenses for 8x10

    Quote Originally Posted by James Morris View Post
    The SSXL 150 is an incredible lens but because of the design, there is considerable light falloff and you will need a CF. They are expensive. 150mm is very wide for 8x10 and I ended up selling mine.


    Mosman, NSW (2014) by James Morris, on Flickr
    Nice detail.

  8. #38

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    Re: Wide angle lenses for 8x10

    Quote Originally Posted by Peter De Smidt View Post
    Does anyone here regularly focus at infinity? I canít remember the last time I did. Iíve used my 120 SA with 8x10. It worked fine.
    There is infinity, and there is infinity!!!

    With my 400mm astronomy telescope, I have to slightly refocus it when it is focused on the moon and I have to change to focus on the stars... ;-)

    Steve K

  9. #39

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    Re: Wide angle lenses for 8x10

    In astronomical terms, that is macro work you are doing
    Expert in non-working solutions.

  10. #40

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    Re: Wide angle lenses for 8x10

    Quote Originally Posted by LabRat View Post
    There is infinity, and there is infinity!!!

    With my 400mm astronomy telescope, I have to slightly refocus it when it is focused on the moon and I have to change to focus on the stars... ;-)

    Steve K


    Steve, I guess that in your case you don't have to slightly refocus because stars are farther than moon, as moon is around 384.400km far yet.


    Perhaps the effective focal length of your telescope changes because atmosphere is part of your optic system, for example the moon and solar discs are seen way larger when they are in the horizon.


    Very Large Telecope (etc) is even automated to modify the optics (Adaptive optics) to overcome several atmospheric effects, including atmospheric turbulence, this is assisted by lasers.

    https://en.wikipedia.org/wiki/Adaptive_optics
    Last edited by Pere Casals; 1-Sep-2019 at 10:55.

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