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Sigma 8mm/4.0 & 15mm/f2.8 EX => AF!


  • From: Willem-Jan Markerink <w.j.markerink@xxxxx>
  • Subject: Sigma 8mm/4.0 & 15mm/f2.8 EX => AF!
  • Date: Thu, 25 Feb 1999 17:10:56 +0000

Just to follow up my note on the pan list, cc'd to the EOS list:

Sigma has released two new fisheye lenses in the EX series:

A 8mm/f4.0 EX fisheye, circular image of 22.06mm, and a view 
of 180 degree in all directions (vertical, horizontal, diagonal, and 
everything inbetween).

And a 15mm/f2.8 fisheye, full-frame image, and a view of 180 
degree diagonally.

Focal length: 8mm / 15mm
Maximum aperture: f4.0 / f2.8
Elements/groups: 10 in 6 / 7 in 6 
Aperture blades: 5 / 7
Minimum aperture: f32 / f22
Minimum focus distance: 20cm / 15cm
Maximum magnification: 1:13.9 / 1:3.8
Filter size: rear slip-in gelatine
External finish: EX / EX
Lens hood:  / "perfect hood"
Dimensions: 73.5 x 61.8mm / 73.5 x 63.5mm
Weight: 320gr / 370gr

Note that the 8mm has a different optical design compared to its 
predecessor: the old one had 12 elements in 8 groups, this one 10 in 
6. It is also 160gr lighter than before, mostly because of the less 
complicated filter design: rear slip-in compared to the previous 
'inbetween' screw filters, which required the lens to be parted in 
half (bayonet construction, requiring most of these 160gr I guess).

Both lenses are available in the following mounts:

Sigma SA
Minolta AF
Nikon (D)
Pentax K(AF)
Canon EOS

The production of the old 8mm and 15mm has been seized, which
includes the manual-only versions Minolta MD, Contax/Yashica,
Olympus and Canon FD mount. 
The new version will be available early summer.

This reminds me that I still have a brand new old-style 8mm/f4.0 for
sale....;-))
Still in its original Contax/Yashica mount, but intended to be
modified to EOS. 
US$600 in original mount, US$750 modified to EOS.

For more info about fisheyes, in particular an overview of nearly 
all fisheyes ever produced (both circular and full-frame, both 35mm 
and medium format), as well as some pictorial samples in a 
sublimation of fisheye, infrared and winter, check my homepage:

http://www.a1.nl/phomepag/markerink/mainpage.htm


--                 
Bye,

Willem-Jan Markerink


      The desire to understand 
is sometimes far less intelligent than
     the inability to understand


<w.j.markerink@xxxxx>
[note: 'a-one' & 'en-el'!]