@davidmanze & thxbb12:
I'm not guessing here. I even presented proof - a webpage associating the lenses with their designers (through patents); here it is again:
http://douglasviewfinder.blogspot.ro/p/k...gners.html
As for the assumption that Tokina lenses were launched before their Pentax counterparts so they're Tokina designs:
- 100mm f/2.8 macro: Pentax in 2004, Tokina in 2006; designer MASAKAZU YAMAGATA
- 12-24 f/4: Pentax in 2005, Tokina in 2004; Tokina design
- 10-17mm fisheye: Pentax in 2005, Tokina in 2007; designer TAKAYUKI ITO+Jun Hirakawa
- 16-50 f/2.8: Pentax in 2007, Tokina in 2007; designer MASAKAZU SAORI
- 50-135 f/2.8: Pentax in 2007, Tokina in 2006; designer MASAKAZU SAORI
- 35mm f/2.8 macro: Pentax in 2008, Tokina in 2007; designer YASUO KANAZASHI+KATO KOJI
Launch dates for Pentax taken from DPReview. Launch dates for Tokina lenses taken from http://www.lensora.com/lenses.asp
I'm not guessing here. I even presented proof - a webpage associating the lenses with their designers (through patents); here it is again:
http://douglasviewfinder.blogspot.ro/p/k...gners.html
As for the assumption that Tokina lenses were launched before their Pentax counterparts so they're Tokina designs:
- 100mm f/2.8 macro: Pentax in 2004, Tokina in 2006; designer MASAKAZU YAMAGATA
- 12-24 f/4: Pentax in 2005, Tokina in 2004; Tokina design
- 10-17mm fisheye: Pentax in 2005, Tokina in 2007; designer TAKAYUKI ITO+Jun Hirakawa
- 16-50 f/2.8: Pentax in 2007, Tokina in 2007; designer MASAKAZU SAORI
- 50-135 f/2.8: Pentax in 2007, Tokina in 2006; designer MASAKAZU SAORI
- 35mm f/2.8 macro: Pentax in 2008, Tokina in 2007; designer YASUO KANAZASHI+KATO KOJI
Launch dates for Pentax taken from DPReview. Launch dates for Tokina lenses taken from http://www.lensora.com/lenses.asp