Goeff, There are three 300mm f4 manual focus Pentax lenses that you will see. The original K lens says 300mm f4 and has a longer straight barrel like the 400mm f5.6. The M*-300mm f4 and A*-300mm f4 are identical mushroom shaped lenses and a bit smaller than the K 300mm f4. I doubt that there is any difference between the two except for the A operating capability. They work well with the A2X-S teleconverter.
The greenstar or simply star * lenses are of special, higher quality. The M*300 was the first such lens designated this way. The next lenses manufactured were the A series and many of the * lenses are in this series. A*300/4, A*135/1.8, A*85/1.4. I purchased a copy of the A*300/4 for $500 a couple of years ago. Anything less would be a bargain for either the A or M*300/4. Regards, Bob S. [EMAIL PROTECTED] writes: << 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? >> - 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 .
