PanoTools NG:
Re: Kenko fisheye lens...
Ken Warner 2009-Jan-12 21:19:17
Nice house! Crummy lens. I wonder if the new ones
are any better? Still, with the magic of Photoshop,
it might turn into a good set of images.
Soft focus like that can be a nice thing sometimes...
Uri Cogan wrote:
> Ken Warner wrote:
>
>
>>Does anyone know anything about Kenko fisheye lenses?
>>It's an old lens. Manual focus, manual apeture 5.6-22.0.
>>
>
>
>
>
>
>
> I actually have one, I bought it about 40 years ago, with a Nikon adapter.
>
> The lens screws like a filter over an old Nikon "normal" 50mm lens (52mm
> thread) and with a "magnification" of 0.16 it converts its focal length
> to 8mm.
>
> It has an aperture ring but no focus. The "normal" lens must be wide
> open, at F1.4 or F2.0, and its focus set to infinity. It will yield a
> round fisheye image on full size sensors, but will chop the sides off on
> my D80 (very similar to the Sigma 8mm).
>
> So I dug it out of my junk pile, mounted it, with the old 50mm lens on
> the D80, and took it out for a 4-exposure hand-held pano shot outside my
> studio. Processed all 4 shots in PTGui with no trouble, and created the
> pano in Pano Converter. The lens is very soft with poor focus at the
> edges, and has tons of CA and puple fringing. I imagine it's images
> could be improved a bit in Photoshop, but I decided to create a panorama
> using uncorrected images. The fact it is a foggy day did not help...
>
> See that panorama (for the next day or so) at:
>
> http://www.uricogan.com/kenko
>
> Uri
>
>
> [Non-text portions of this message have been removed]
>
>
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