Inquiring mind(s) want to know!
I've been considering a
K 500/4.5 since last year, but recently I've been feeling a strong pull from the
A* 600mm F5.6. I realize the K 500/4.5 is more "play" and the A 600/5.6 is more "serious".
I consider myself experienced with long legacy tele lenses...
A 400/5.6,
400/4,
300/2.8,
200-500/5.6 are all part of my regular rotation. The real eye-opener among that group is the Tamron 400/4 Adaptall. Not only is it sharp wide open - and very sharp stopped down just a little - but when coupled with the
Pentax Rear Converter-A 1.4x-L it is still decently sharp wide open and gets quite sharp again just 2/3 stopped down.
I think what I want to hear is, "the A 600/5.6 is amazingly sharp even wide open."
But I'd really like to read opinions from folks who have used it, and how it compares to other lenses (K 500/4.5, DFA 150-450?) I do welcome and appreciate all ruminations, though