I've just got myself a Tamron 28-75mm f/2.8 Di (from a list member) after reading some really great reviews, had to decide between Sigma EX, Tokina ATX and the Tarmron. Apparently the lens works really well with the Tamron 1.4x if you can live with the focal length restriction:
the article: http://www.bobatkins.com/photography/reviews/tamron_28_75.html I'm planning on trying mine with a Kenko 1.5x SHQ when I get some good light. I'm not sure you could use the Sigma EX because of the proximity of the rear lens element on the Tamron. John ---------- Original Message ----------- From: "Amita Guha" <[EMAIL PROTECTED]> To: <pentax-discuss@pdml.net> Sent: Sat, 5 Feb 2005 22:22:52 -0500 Subject: teleconverters > I am trying to figure out my kit for my London trip. I think I'm > going to go with my Tamron 28-75mm f/2.8 Di and a teleconverter. Now > I have to figure out which teleconverter to get. B&H has 2x > teleconverters by the following manufacturers: > > Tokina > Tamron > Kenko > Sigma (APO) > > The Kenko is the cheapest and the Sigma is the most expensive, but > that one doesn't fit all cameras. I would appreciate any advice > about which one of these is best optically. I've seen some pretty > impressive results from the Tamron but none using the *istD. > > Thanks, > Amtia ------- End of Original Message -------
