The price difference is considerable, nearly a thousand £'s. These days that's a lot of money.
So the question is how much better is this Pentax at £1,699 . . .
Pentax HD PENTAX-D FA 150-450mm F4.5-5.6 ED DC AW Lens
than this Sigma at £799 . . .
Sigma 50-500mm F4.5-6.3 DG OS HSM Lens - Pentax Fit
My longest lens right now is the D-FA* 2.8/70-200 which is phenomenal at all focal lengths/any aperture. But I need more zoom. The D-FA 150-450 and the Sigma 50-500 seem to be the only options. The D-FA seems to have reliability issues too, reading reports on PentaxForums. I go away for long periods which means the gear can't fail in the field and I can't return the equipment, sometimes within the warranty period.
Preferably, I'm looking for optimal performance at the long end. Use will be on the K-1.
Many thanks in advance.
Last edited by HopelessTogger; 10-30-2016 at 03:00 PM.