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Thread: Ultra Wide Vs Fisheye

  1. #1

    Default Ultra Wide Vs Fisheye

    I bought a 10-20mm Sigma and was considering getting a Fisheye
    are these considered an overlap? with photoshop and all...
    Thanks

  2. #2

    Default Re: Ultra Wide Vs Fisheye

    don't think it's overlap
    fisheye effect i think can PS, but need quite a bit of effort

    the question is, do you really need a FE?
    i mean, the effect is cool and all that
    but it does get a little boring after a while
    i would imagine that if i got a fe i won't really use it that much, so it'd realy be a very veyr spare spare lens

  3. #3

    Default Re: Ultra Wide Vs Fisheye

    a little effort to save ~1k? i'll do it!

    i think a lot of things can be done with fisheye. and it'll definitely be interesting when i'm taking pictures for friends' events

    so i guess my main question is: can software make ultrawide=fisheye?

  4. #4

    Default Re: Ultra Wide Vs Fisheye

    PS prob can replicate the distortion that a fish-eye lens produce.. but not the perspective of it..

    anyway, since you have an ultra-wide already, a diagonal fish-eye is abit of overlap.. go for the circular type, like Sigma's 8mm..

  5. #5

    Default Re: Ultra Wide Vs Fisheye

    let me get this straight:
    diagonal fisheye means narrow fov? e.g. 15mm
    circular fisheye means wider fov? e.g. 10.5mm

  6. #6

    Default Re: Ultra Wide Vs Fisheye

    Quote Originally Posted by theislandofdreams View Post
    let me get this straight:
    diagonal fisheye means narrow fov? e.g. 15mm
    circular fisheye means wider fov? e.g. 10.5mm
    don't mind me posting an old pic taken by the 8mm?



    basically what circular means exactly that, you get a circle for an image.. an extremely wide fov, think of a hemi-sphere.. whereas diagonal you get a "full-frame" image, where you get 180degrees fov along the diagonal..

    hope this explains..

  7. #7

    Default Re: Ultra Wide Vs Fisheye

    so the sides of the image which are dark are really... dark. as in there is no image captured?
    you get a circular image?

    isn't 180 degrees for a diagonal the same as 180 degrees horizontal? -eyes moving and brain imagining-
    Last edited by theislandofdreams; 31st August 2007 at 01:21 AM.

  8. #8

    Default Re: Ultra Wide Vs Fisheye

    its projects a circular image onto the sensor.. so on FF/Film you'll see a full circle, but on 1.6x/1.3x bodies its cropped so you don't get to see abit of the top and bottom..

    it isn't.. for the circular fisheye, its 180degrees in all directions.. as in the diameter of the circle projected is 180degrees FOV..

  9. #9

    Default Re: Ultra Wide Vs Fisheye

    I use the Tokina fisheye zoom. I got the fisheye over a wide angle zoom for my 30D cause I can always convert the fisheye to wide angle. Its actually quite easy, don't use the lens correction filter but use free transform, free warp. twitch the image a little here and there you'll get a wide angle.
    5D MII w/16-35L,Sigma 28-70&Nikkors(35f2,85f1.4,105f2.5,180f2.8ED)

  10. #10
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    Default Re: Ultra Wide Vs Fisheye

    You can duplicate an ultrawide by linearizing the fisheye shot in software, but you cannot do the reverse. Fisheyes have a diagonal field of view of 180 degrees - something physically impossible for a rectilinear (non-fisheye) lens. Also, after you convert a fisheye picture, the aspect ratio is different from the original, ie no longer 3:2; you'd need to crop some more.

    i use a fisheye, as well as a Sigma 12-24 and the Canon 16-35. IMHO, the fisheye gives unique perspective that a normal wide angle cannot. i bought the fisheye on a whim, thinking i would sell it off soon; it has been with me for many years and has become one of my must-bring lenses for weddings.
    Last edited by ST1100; 1st September 2007 at 08:27 PM.

  11. #11

    Default Re: Ultra Wide Vs Fisheye

    Quote Originally Posted by theislandofdreams View Post
    so i guess my main question is: can software make ultrawide=fisheye?
    if you are using nikon 10.5...can use nikon NC to de-fish it...

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