>From my files: �Bill Long asked about several of the Sigma lenses. A friend, a birder as it happens, uses the Sigma 135~400 on her N70. She is very knowledgeable about her subject and is more than happy with her choice of the lens. I have used it and noted that the focus is swift and sure. The heft of the beast makes it a sure tripod sitter or, at the least, something to use with a shoulder stock. Her results appear clear - - edge to edge - under the loupe.�
Pascal De Paux: �I recently read a test at Focus (a Dutch photo mag.) where they tested four Sigmas: the 135�400, the 170�500, the 300, and the 400. The 135�400 did indeed get a very good review, and even an award. They used an MTF (modulation transfer function) test method, whereas the CdI mag. uses the 2E test. (?) They said the 135�400 is very good up to 300 and becomes a bit soft at 400mm, but not as soft as the Tokina 80-400. But, they said, if you need a 400mm only, the fixed-focus Sigma 400mm is better.� [EMAIL PROTECTED] -------------------------------------------------------------------- mail2web - Check your email from the web at http://mail2web.com/ . - 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 .
