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  • Fish eye v Wide angle

    Mark Johnson

    My Sailing Page

    My Flickr

  • #2
    Re: Fish eye v Wide angle

    Fisheye lenses will curve anything away from the centre of the field of view. The curvature gets greater as you move away from the x/y axis. So yes, they distort always (if rectilinear is your view of "undistorted" ).

    They can be defished easily but lose resolution towards the edges as a result. I've found that the Samyang 7.5mm FE (an excellent lens BTW) can be defished to about an equiv rectilinear view of 7mm without too much loss of resolution.

    This post I did some time ago might be of interest to you:

    https://www.mu-43.com/threads/iq-of-...-images.60658/
    Paul
    E-M1ii, Pen-F and too many lenses
    flickr
    Portfolio Site
    Instagram

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    • #3
      Re: Fish eye v Wide angle

      Sounds good. What does de-fishing entail? (without googling) .

      I would assume the removal of that dome lens somehow!!

      Thanks for that link........

      EDIT..........See that the defishing is in software manipulation.

      Could it be done in the camera via Keystone?
      Mark Johnson

      My Sailing Page

      My Flickr

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      • #4
        Re: Fish eye v Wide angle

        Have a look at DxO Viewpoint. The early versions can be available for free.

        So many cameras offer sweep panorama that the Ultra Wide image can often be "created"

        Fisheye is something that can be used very effectively but is best used sparingly.
        Graham

        We often repeat the mistakes we most enjoy...

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        • #5
          Re: Fish eye v Wide angle

          I use the free Panotools plug in, for GIMP or Photoshop Elements, to 'de-fish' my shots. Be careful when downloading any free software from the web since there are many unscrupulous sites that will 'bundle' software that you definitely do not want on your computer.

          My fisheye lens is the Meike 6.5mm f/2, which is a well-made, small and light lens. The circular image is slightly cut-off at top and bottom, on an M4/3 sensor, but, in most of my photos, it's easy to fill in a bit of sky or ground.

          The fast aperture makes it an excellent indoor lens and the images de-fish quite well, if that's what you want.
          Mike
          visit my Natural History Photos website:
          http://www.botanicdesign.co.uk/Natur...story/home.htm

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          • #6
            Re: Fish eye v Wide angle

            The Samyang 7.5mm FE is a superb lens. It's razor sharp corner to corner even wide open. It also delivers excellent sun-stars! For its price, it's sort of a no-brainer.
            Paul
            E-M1ii, Pen-F and too many lenses
            flickr
            Portfolio Site
            Instagram

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            • #7
              Re: Fish eye v Wide angle

              Originally posted by pdk42 View Post
              The Samyang 7.5mm FE is a superb lens. It's razor sharp corner to corner even wide open. It also delivers excellent sun-stars! For its price, it's sort of a no-brainer.
              Maybe it's an affordable lens for me to dabble with too. I'll fix a few more violins & buy it.
              Ross
              I fiddle with violins (when I'm not fiddling with a camera).
              Flickr: https://www.flickr.com/photos/ross-the-fiddler/
              Cameras: OM-D E-M1 & Mk II, Olympus Stylus 1, OM-D E-M5.
              Lenses: M.ZD7-14mm f2.8 PRO Lens, M.ZD12-40mm f2.8 PRO Lens, M.ZD40-150mm f2.8 PRO Lens, MC-14, MC-20, M.ZD45mm f1.8, M.ZD12-50, M.ZD60 Macro, M.ZD75-300 Mk II, MMF-3, ZD14-54 II, Sigma 150mm F2.8 APO Macro DG HSM.
              Flashes: FL36R X2, FL50R, FL50.
              Software: Capture One Pro 10 (& Olympus Viewer 3).

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              • #8
                Re: Fish eye v Wide angle

                When a Fish eye lens comes up against a concave mirror, "interesting" things happen...

                I found one at the top of the Orbit in the QE2 Park

                Graham

                We often repeat the mistakes we most enjoy...

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                • #9
                  Re: Fish eye v Wide angle

                  Interesting way to de-fish Graham
                  I've never bothered to de-fish mine, I just enjoy the shots the way they turn out. It's a fun lens and as Paul says nicely sharp and great value.
                  http://www.flickr.com/photos/flip_photo_flickr/

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                  • #10
                    Re: Fish eye v Wide angle

                    I should mention that there are different types of fish-eye lens. Only the shortest focal lengths will provide a circular image within the sensor frame.

                    Many, such as the Olympus 8mm, fill the frame, so that the circular effect is lost. Check reviews of lenses to make sure you will get whatever effect you want. The full-frame versions are more suitable for 'de-fishing', while the circular images provide a character that is all their own.

                    My Meike 6.5mm, which is an excellent lens, provides a result as shown below:

                    Mike
                    visit my Natural History Photos website:
                    http://www.botanicdesign.co.uk/Natur...story/home.htm

                    Comment


                    • #11
                      Re: Fish eye v Wide angle

                      I sold my Samyang 7.5mm

                      I'm thinking of getting the 7.5mm f/2.8 from 7Artizans.

                      Anyone tried one ?
                      Graham

                      We often repeat the mistakes we most enjoy...

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                      • #12
                        Mike
                        visit my Natural History Photos website:
                        http://www.botanicdesign.co.uk/Natur...story/home.htm

                        Comment


                        • #13
                          Mike
                          visit my Natural History Photos website:
                          http://www.botanicdesign.co.uk/Natur...story/home.htm

                          Comment


                          • #14
                            Re: Fish eye v Wide angle

                            I was after as wide an angle as I could get, without the fisheye distortion...I guess the 8mm Wide angle is gonna be the biz.........

                            Thanks all for gems........
                            Mark Johnson

                            My Sailing Page

                            My Flickr

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                            • #15
                              Re: Fish eye v Wide angle

                              Mike
                              Compulsive photographic Dabbler.
                              Flickr

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