Its plastic primarily, which i dont like. However, its very light, solid as can be, and for being plastic thats pretty impressive.
Its glass isnt that of Nikkor, but its better than most.
Its got smooth action, which is always a plus, and has razor sharp detail corner to corner.
Ive got the Sigma 150mm too, and i never even pick it up anymore.
I thought about buying the nikon 105 the other day, but decided to get the focusing rails instead. They came in today, ill get some pics up tonight using them and we can give them a quick review.
One thing i like better about the nikon 105 and the canon 100 is that it has internal focusing. The tamron's barrel extends as you go through the range of the lens.
Its not a big deal, but it can be a PITA at times.
However, overall for the money ~vs~ nikon its perfect. Its half the price of the nikon 105.
Its only $50 cheaper than the canon 100 though...so thats a tough call.
Nice stuff. I've heard good things about that Tamron 90 and your images support those statements. Is the build quality on that lens up to snuff? I would like a macro lens in the 100-mm range (sometimes the 180 is just too long), but generally shy away from Tamron's lenses. It looks like that one is right on the button.
Gary
