Hi fellow Pentaxians
I've decided to bite the bullet and look for an auto focus lens for birding
In my declining years my hands are just not steady enough to manual focus and get good results.
I have thought about a KatzEye or similar to see if that helps, but I think that the reality is that I need auto focus.
I have narrowed down my choice to 3 lens.
A Pentax * Series 300 f/1:4 ish
Sigma 100-300 f/1:4
The first two get very high ratings in the various forums I've checked. The Sigma 150-500 rates a little lower but has the extra reach.
I'd appreciate any feedback from Pentax users who have any of the above.