Canon 50/1.4 light fall-off ?

Discussion in 'Canon' started by fgphotog, Sep 3, 2003.

  1. fgphotog

    fgphotog Guest

    I didn't keep f-stop records so I dont know at which aperture the problem
    starts appearing, but I have just returned from a european trip where I used
    my new 50/1.4 extensively . I have found that in most landscapes featuring a
    clear blue sky there is significant light fall off on the left and right
    side of the frame. Almost a vignetted look (I have the dedicated lens hood).
    Disappointing. Is this common with this lens ? At what aperture does it
    appear ? Comments ?

    thanks Frank
    fgphotog, Sep 3, 2003
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  2. fgphotog

    Adam F Guest

    you can expect severe light fall-off between f/1.4 and f/2, sometimes up to
    f/2.8 on any ultra-bright lens

    canon 50/1.4 should be ok from f/2 up though, if not you may have a bad

    adam f
    Adam F, Sep 3, 2003
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  3. fgphotog

    Dave Guest

    Were you using a filter? Slim or regular? Maybe some of the vignetting was
    due to the filter


    Dave, Sep 3, 2003
  4. How can you have a bad example? Surely it's <simple> geometry, and fixed during
    Perhaps using a more contrasty film. e.g. Velvia 50 ISO, which is both
    contrasty, and perhaps slower than the marked 50 which would exacerbate any
    Malcolm Stewart, Sep 3, 2003
  5. fgphotog

    fgphotog Guest

    no filters at all.
    & using 100asa/iso transparency film.
    fgphotog, Sep 3, 2003
  6. Were you using a polraizer or filter?
    Michael Scarpitti, Sep 3, 2003
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