On Saturday, June 15, 2013 12:51:19 PM UTC-6, Savageduck wrote:
On 2013-06-15 09:25:16 -0700, said:
HELP!?? Vintage lenses OK.
Why do you need a "fish-eye" faster than f/2.8?
I'm trying some "creative" wide/ultrawide starry sky imaging on some digital cameras and I wanted to gather as much light as possible.
I appreciate your insight on fisheye vs. uwfov and have been experiencing these design differences first hand. I've currently acquired used copies of the Nikkor 10.5, 14 and the 16.
I was led to believe that Schneider, Voigtlander, Leitz and perhaps Century all made extremely low F# UW or Fisheye designs in years past but I'm having a tough time finding much more than casual allusions to such.. and I'm not even sure they made them for FX full format cameras.
The Nikkor 14mm f/2.8 is not a "fish-eye" it is an ultra-wide angle
lens. There is more to a "fish-eye" lens than just being a wide angle.
Typically the idea is to capture a 180 degree field of view and that is
usually attained by a combination specialized lens construction
imparting a spherical distortion beyond that imparted by an ultra-wide
angle. I seriously doubt that you will find a "fish-eye" lens faster
than a f/2.8 as it is not usually needed.
Nikon has two dedicated "fish-eye" lenses, one DX & one FX.
The Nikkor 10.5mm f/2.8 is their current DX "fish-eye" offering. Their
FX "fish-eye" is the 16mm f/2.8.
http://www.nikonusa.com/en/Nikon-Pro...%252F2.8D.html
There are several other dedicated "fish-eye" offerings such as this one
from Tokina.
http://www.tokinalens.com/tokina/pro...afdxnhfisheye/
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Regards,
Savageduck