Actually no, I'm not. I remember seeing one somewhere, but I was looking for a link just now and can't find it. Even a lens with the equivalent of a 12mm AOV on 35mm for APS-C would be 8mm. Still a made out of unobtanium.

On 4/25/2012 1:48 PM, Matthew Hunt wrote:
On Wed, Apr 25, 2012 at 1:33 PM, P. J. Alling
<[email protected]>  wrote:

Ultra wide is the biggest deficiency.  You can get 10mm rectilinear lenses
for 24x36mm formats, the equivalent in APS-C would ~6.7mm.  Which would seem
to be extremely difficult to engineer, at a reasonable price with reasonable
quality.
Are you sure about that? The widest rectilinear full-frame lenses on
Canon and Nikon's websites are 14mm, and this (undated) Luminous
Landscape article says the widest overall is a 12mm Voigtländer (for
rangefinder, not SLR):

http://www.luminous-landscape.com/reviews/lenses/ultrawide.shtml

The 10-20mm APS-C zooms aren't quite as wide as the 14mm full-frame
lenses, but it's pretty close.



--
Don't lose heart!  They might want to cut it out, and they'll want to avoid a 
lengthily search.


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