Hi, the green star lenses are premium lenses that Pentax do using low-dispersion glass or some other special optics. They are identifiable by the green '*' after the M or A, as in SMC Pentax M* 300mm...
In this instance the M* and A* lenses are identical except for the auto aperture setting on the A* lens. They are relatively small and lightweight compared to the ordinary 300mm lenses, and of very high build quality. In fact, it is quite hand-holdable. Optically they are fine. I had one and had no complaints whatsoever. Some people reckon the normal lenses are rather better optically. The * lenses tend to command a premium price. Mine was quite serviceable with an A2X-S teleconverter, although of course the viewfinder became quite dark which could make focusing tricky. --- Bob mailto:[EMAIL PROTECTED] Saturday, October 27, 2001, 4:09:04 PM, you wrote: > Hi, > I was contemplating getting a 300mm Lens. I use LX�s and MX�s so I > was thinking of getting a manual focus lens. There is an SMC M > 300mm f4 on ebay right now that I was thinking of bidding on. I was > also thinking of getting a 2x tele-converter to use in conjunction with > it. I wanted to get some opinions on the variations of 300mm lenses > (excluding the the f2.8, too big and too expensive), what is the best > and how much do they go for? Is the A better then the M? Are they > compatible with a 2x converter and can you get good results with > that combination. > Also a 300mm sold on ebay a while back, it was listed as a > Greenstar, what is Greenstar? > Thanks, > Geoff > - > 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 . - 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 .
