Hrishi,
We are getting there Hrishi. Once you get some sort of tripod collar made you will have a lot more success with this lens. While shake reduction helps a lot, when focal lengths start reaching the 600mm and higher range one needs some sort of serious support with all lenses no matter who makes them. It is just a fact of life.
I'm going to continue with my K 300 and K6-2x experiment as it is fun and I really want to see what is possible with this combo. Let's keep posting from time to time to see how we are progressing.
I've begun to think maybe we are being a little tough on the old K 300mm f/4 with this purple fringing (PF) thing. Chromatic aberrations (CA), purple fringing in high contrast situations are still present in modern lenses. Should we be surprised they are present in a 30-year-old lens or modern lens for that matter?
Klaus Schroiff of Photozone in his recent review (Feb. 2008) of the new
Pentax DA* 200mm f/2.8 ED found evidence of CA and PF in this new lens
as well. The overall evaluation of the new lens was very good but
longitudinal chromatic aberrations were present too.
Pentax SMC DA* 200mm f/2.8 ED [IF] SDM - Review / Test Report
Says Klaus:
“In high contrast situations the new DA* 200 lens shows a rather high
amount of purple fringing and longitudinal chromatic aberrations (LoCA), colored out-of-focus halos, are also higher than average.”
It seems you can pay over $1,100 for this new lens and still get PF. I doubt anyone would argue that the DA* 200 f/2.8 is not a good lens. I want one myself – badly. But it is not a perfect lens. That lens doesn’t exist and never will. Depending on condition, at $200 to $400 on EBAY for a K 300mm, you can get a lens capable of stunning shots but it comes with some limitations. If you are aware of the CA and PF issues you simply avoid high contrast situations. You might miss a few shots but there are still a lot of good ones to be had.
The K 300 is still a great lens and a bargain to boot.
Cheers,
Tom G