Joseph, A while back I had the Tokina 17mm when I aquired the FA 20/2.8. I had to decide if I was going to keep both. After doing some tests, I concluded that the 17 was not that much wider to warrant carrying around two lenses. I think you would want to carry the 15.
Something else you really should consider. Pentax makes a truly unique lens in the Fisheye zoom. What is interesting is that as you zoom in, the fisheye effect diminishes quite a bit. It gives you the fisheye and the ultra wide in one smaller package. You wouldn't have to carry around your Zenitar either. If you can find one to try you might be very pleasantly suprised at how versatile it is. Bruce Dayton Wednesday, March 13, 2002, 6:01:50 PM, you wrote: JT> For ultra-wide, I have the FA 20-35 (a great lens) and the Zenitar 16mm. JT> f2.8 fisheye. I am thinking about getting a non-fisheye prime that is JT> wider than the FA 20-35. The choices seem to be: JT> 17 mm. (Tamron, Tokina): 104 degree diagonal field JT> 15 mm. (Pentax, if one can find used) 111 degree diagonal field JT> 14 mm. (Sigma, Tamron) 114 degree diagonal field JT> Now, at 20 mm. the FA 20-35 has a 94 degree diagonal view. The 17s are JT> small and affordable, but only give an additional 10 degrees of diagonal JT> view. The 14s and 15 give much more view but are expensive and heavy, JT> and these lenses have design limits - weaker at the edges, light JT> fall-off, flare in the non-Pentax brands. JT> I use very wide-angle for architecture, maybe also for landscapes. I JT> find that I use the FA 20-35 a lot, and that it gives me perhaps my JT> highest percentage of "keepers." The options I am pondering are: JT> 1. Get a 17 - small, inexpensive, but is the extra 10 degrees of view JT> worth carrying around an extra lens? JT> 2. Get a 14 or 15 - gives the extra view, but has the limits noted JT> above. JT> 3. Just make do with the FA 20-35 and the Zenitar 16 mm. fisheye. JT> What do wide-angle users think? JT> Thanks, JT> Joe JT> - JT> This message is from the Pentax-Discuss Mail List. To unsubscribe, JT> go to http://www.pdml.net and follow the directions. Don't forget to JT> visit the Pentax Users' Gallery at http://pug.komkon.org . - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
