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I don't care what anyone says, I like Purple Fringing ...

Discussion in 'Pentax Chat' started by Done_rundleCams, Sep 17, 2017.

  1. Done_rundleCams

    Done_rundleCams AP Forum Ambassador to Canada

    and slightly soft photos ;) .... taken with my K-50 and Tele-Takumar (M-42) 400/5.6 lens ..

    Sept15-17-AP-Fri-JRSP0003 copy.jpg

    Cheers,

    Jack
     
  2. Craig20264

    Craig20264 Well-Known Member

    Oh yes. That's some serous CA going on there. :)
     
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  3. Done_rundleCams

    Done_rundleCams AP Forum Ambassador to Canada

    Oh yeah, Craig :D .... Bright sunny day with a 40 (ish) year old lens ... I kinda expected as much, well, maybe, not this much ;)

    Cheers,

    Jack
     
  4. Andrew Flannigan

    Andrew Flannigan Well-Known Member


    It's a perfect case of "so bad it's good". ;)
     
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  5. spinno

    spinno Well-Known Member

    It's art, nuff said
     
    Done_rundleCams likes this.
  6. Done_rundleCams

    Done_rundleCams AP Forum Ambassador to Canada

    Indeed, Andrew, indeed :) and, pretty much, sums up all of my pics :D

    Cheers,

    Jack
     
  7. Done_rundleCams

    Done_rundleCams AP Forum Ambassador to Canada

    As, David, my old photo editor used to say ''... if it's not news, it's art" :D

    Cheers,

    Jack
     
    Zou likes this.
  8. Chester AP

    Chester AP Well-Known Member

    Somewhere, sometime, somebody will start with a technically perfect picture taken with the latest very expensive hardware, and then spend many happy hours playing with software trying to produce something like this...

    Do you have lens that will produce the fashionable green fringes instead?
     
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  9. Done_rundleCams

    Done_rundleCams AP Forum Ambassador to Canada

    :D ... If memory serves, Chester, back when I had photoshop, I could do that with .... not the Saturation, but the thing that was linked up with it (??), so, failing
    to remember what I'm trying to think of, Nope, I don't think I do ;)

    Cheers,

    Jack
     
  10. Chester AP

    Chester AP Well-Known Member

    I have a K5 which I believe has the same 16 Mb Sony sensor as your K50. This is a crop (not resized) from the centre of a 'straight from the camera' JPEG shot using the 400 mm end of an old Tokina 80-400 zoom that is about 15-20 years old used with a long (10 cm) lens hood. I have found that the fringes are minimised at 1 or 2 stops down from the maximum aperture, and are also reduced when using the long lens hood (so perhaps light entering the front element of the lens from the side is part of the problem) . Both purple and green fringes can be seen around the duck's head, but a few moments with my old copy of Photoshop Elements 7 has reduced these. The real problem with this shot is the unexpected dynamic range - the white tail feathers have lost detail that can only be partially recovered from the RAW file.
    _IGP1662 CROP.jpg
     
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  11. Done_rundleCams

    Done_rundleCams AP Forum Ambassador to Canada

    I know what you mean, Chester, about closing down the aperture and it definitely reduces the purple fringing :). I can see the purple around the ducks
    head, but, I can't see the green :eek:

    Cheers,

    Jack
     
  12. Chester AP

    Chester AP Well-Known Member

    If you click on the image you will see it full size at 2721 x 1647 pixels. Then look at the beak - the purple fringe on the left and green fringe underneath are visible. I don't usually put images this size on the website, but in this case resizing it to 1000 pixels would probably make the fringes less visible.

    Chester
     
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  13. Done_rundleCams

    Done_rundleCams AP Forum Ambassador to Canada

    Hi Chester,
    I might be getting slightly colour blind, with a green bias, if there is some green fringing underneath the beak it must be very minute, cuz, I can't see it :eek:
    Although, that wee drop of water is cool :)

    Cheers from Confused in Vancouver :eek:

    Jack
     
  14. spinno

    spinno Well-Known Member

    I thought I spied the purple fringing in the water?
     
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  15. Done_rundleCams

    Done_rundleCams AP Forum Ambassador to Canada

    I can see, kinda, the reflection of purple fringing of the duck (?)

    Jack
     
  16. El_Sid

    El_Sid Well-Known Member

    It is there but it's narrow, quite weak and the shade of green is not that dissimilar to the water behind it, I had to look carefully to see it...:)
     
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