Originally posted by Emacs I would punish for the decision to make fish eye a zoom lens. I only need 10mm and nothing else.
I came to Pentax specifically because of the DA10-17, and I do use it throughout its range. It is just so much fun to play with angles and contexts! I also use a Kenko 180 degree fisheye adapter on a zoom lens. At 40mm it is full-circle, at 60mm it is frame-filling, and above 60mm it shows various possible projections. Wide is just NOT ENOUGH!!
Originally posted by wildman A lens that can change it's focal length seems to me to be the natural course of lens development.
The design of a variable-focal-length lens goes 'WAY back, like to around 1890.
Look at figure 3 here. I have some Eastman 100-150mm slide-projector lenses that seem to be built like this.
Quote: It would be interesting to read these posts 15 years from now.
Will humans still be reading in 15 years?
Originally posted by GeneV If there were a 12mm prime, I'm not sure I would need a 12-24mm lens, either.
You want a 12mm prime? I have one! It is branded as Vemar but is may be given many different names. Yes, a 12mm fisheye with f/8-11-16 Waterhouse stops, a full-circle lens hood, and lousy optics. No, you *do* need a 12-24, or a 10-20 or 10-24. Some primes suck.