Download from here:
http://www.digital.pentax.co.jp/ja/info/20050415e.html

Andy - not unless you order the 12-24 from Germany, as George did. His cost £450 That's where my money's going!
Matt

Just for your information, Park Cameras now list the price of the 10-17mm at £379.99 SRP, and £339.99 from them. ( http://www.parkcameras.com/cameras/slrcameras/pentax.htm )
Matt

DOH!

Just answering my own question
http://www.photo.net/learn/fov/

Fisheye bends the outer edges, and so the equation is:
Fisheye AoV = 4 * arcsin (28.26/(f * 4))

So there ya go
Matt

Here's an interesting question with regard to this lens...

The fish-eye 10-17mm is quoted as having "180 degree" angle of view on an *ist-D
The 12-24mm is quoted as "99 degree" angle of view (at 12mm)

Now, the angle of view = 2 * arctan (28.26/ (f * 2))
Where f is the focal length in mm,
And the 28.26 is the diagonal width of the sensor (23.5 x 15.7 - remember Pythagoras?)

So, for a 12mm, that does indeed work out at 99 degrees.

However, for 10mm, that works out at 109 degrees - how does the extra 71 degrees get there?!

Is it just the curvy nature of the fish eye that means I can't apply the rectilinear equation above?

BTW, BHPhoto list the 10-17mm at $580. (Compared to the 12-24mm at $720).

I'm extremely tempted to wait for the Pentax 10-17mm fisheye (rather than go for the Sigma 10-20mm which does have a 109 degree AoV).

What do you think??
Matt

There are some sample images on the Pentax Germany site:
http://www.pentax.de/_de/photo/lenses/index.php?gruppe=41&produkt=1796
(Look for "Testfoto" under the "Downloads")

Looks seriously curvy

Matt

Just adding this to the forum so you don't miss out on this
https://www.pentaxuser.com/pages/news/nws_1017mm.htm

Original news from the US site:
http://www.pentaximaging.com/footer/news_media_article?ArticleId=6813

I just wear an Australian wide-brim hat. Keeps me cool and provides the shade for the LCD.
Anyhow, the Delkin is only available for the *ist-DS, not the *ist-D
Matt

I think you'll find it's the *ist-DS2 (not *ist-D2).

The *ist-D is the only Pentax DSLR to have a battery grip, and as yet there doesn't appear to be a replacement... though many are anxiously waiting for one!

Matt

There are Pentax lenses that cover those ranges.
BUT, they are extremely rare, and also very expensive!
e.g. http://www.bdimitrov.de/kmp/lenses/zooms/long/FA80-200f2.8.html and http://www.bdimitrov.de/kmp/lenses/zooms/long/FA250-600f5.6.html
(They'll cost you significantly more than a camera body, but with good reason)

I have used a Sigma 70-200/f2.8 on a Canon 20D (did I say that?!) and it was quite nice. But there are Sigmas and Sigmas. Even of the same model you can get a variation in quality.

I went through the same agonising questions about Sigma models. In the end I bought a Pentax FA 80-320. Cost me under £100 second hand in near mint condition from Jessops.

Now, it's not as flashy as the Sigmas, but I've got some absolutely stonking images (if I do say so myself) from it with the Pentax *ist-D. Incredibly light and portable, but razor sharp! But, as with all long lenses, you must use it on a tripod/monopod (I use Manfrotto carbon fibre).

Here's a recent shot taken with it (on a monopod) http://www.ephotozine.com/gallery/showlargepic.cfm?photoid=343556

But, as John said, you've asked about two lenses that are completely different and have different uses! If you want wide aperture, that's one question (and an answer that will cost you!), if you want long focal length that's another. It's a case of compromises.

Would I trade my 80-320 for a Sigma though? Definitely not
But then, like John, I find I always prefer Pentax glass (colour, flare control, contrast etc). You may have other preferences.

Matt