Andre Langevin <[EMAIL PROTECTED]> wrote: >>the ones recommended are the double element types from either Nikon or >>Canon. i don't know if anyone else makes them that are easily obtainable. >they are more expensive than ordinary single element closeup lenses. >Herb... > >Minolta and Sigma are quite common also.
The Sigma is now discontinued. I have one and I'm quite pleased with it. It's a 58mm thread and works nicely on my 200mm f/4.0 for the 645. They're probably still to be found on eBay. -- Mark Roberts Photography and writing www.robertstech.com

