Knut Kampe writes: > The Tamron has one advantage though: it has built in filters. This may be > an issue since vignetting might become a problem with screw on external > filters. Did anyone notice this to be a problem with the Toina?
The Tokina I got secondhand came with a multicoated Hoya UV filter. No vignetting problems at all because the thread (58mm?) is quite large relative to the front element. If its the 17/3.5 SL you're talking about its a really good lens for the price. Distortion is about the same as the Pentax, sharpness and light falloff is not quite as good (but the lenses are very close when stopped down to f/8). Its weak point is contrast and flare. Cheers, - Dave David A. Mann, B.E. (Elec) http://www.digistar.com/~dmann/ "Why is it that if an adult behaves like a child they lock him up, while children are allowed to run free on the streets?" -- Garfield - 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 .
