Originally posted by Cosmo Image quality is great with both. In terms of focal length, there's quite abit between them, I don't know why you're choosing from between these two. The 200mm is highly praised in all the reviews I've read about it, plus it has the HSM.
Yeah the focal lengths are vastly different. It is some what weird to consider totally different focal lengths.
This is my thought process...
I had my sigma 10-20, Tamron 18-250 and then the sigma 100-300. I sold the 18-250 to replace them with quality primes. I've got the DA21, FA43, FA77. I need some lenses to cover the longer end, so I have them for my next trip. I can pull out the 100-300, but I am looking for lenses that is less conspicuous. Now I got the ok from my wife to get another lens.
To get the DA 200, I would have to sell the Volna-9 (The FA 77 with ext tube gets close to what the Volna can do), and sell the Vivitar 85/1.4 (not in my bottom list as it is currently with the manufacturer to be replaced). I heard the 135 AF is very noisy, will this be a problem in an auditorium ?
Secondary thoughts include trying out my 'A' ext. tubes with these as well, wonder whether anyone has tried this, and what their results were.
The question probably should be more like whether the Pentax-F 135mm compete in IQ to my other lenses and the DA 200?, as that is the biggest missing piece in my decision making.
P.S: At the end, I very much doubt that I will spend close to 1k for one lens....the sigma 100-300 is so fabulicious that I did it after some loooong thoughts, and at the time I got it, they were very difficult to find as the Pentax mount was out of production, and when one came for sale at Willoughby's I grabbed it. I don't think I can do that again for the DA 200....unless the F-135 is shit and DA 200 is the only choice, which I think is not the case here....