Being on a budget and, in an effort to get a bit more "reach", I recently purchased a Samyang 800mm f/8.0 Reflex lens.
While I was at it, I got a focus assist chipped T2 mount. Lens is still full manual control but at least the camera now knows what's attached and I get both audible and visual indication of focus. The focus on this lens is quite course above 10 metres so it's really easy to overshoot while rolling back and fourth to get it sharp. It's slow process but I am getting the hang of it.. I think.
All up this rig has cost me $240.00 so not expecting great things when you consider this is worth something like 1/50th of a 600mm f/4.0 AF lens. A few test shots below which have nothing done at all in pp other resize the large jpeg files down to 1024x683, 250kb for viewing on this site. Original full sized files are pretty much as expected (average) when viewed at 100% but reduced files with a little bit of lovin' in pp seem to come up quite acceptable. I will post some of the results in the appropriate forums over the next few weeks.
By the way, only in camera enhancement is saturation - 2 all other settings for "Standard" are set to 0.
All subjects below were well within 10m which made focusing quite easy.
Hand painted clock:- Actually lied above, this pic has been smart sharpened to 50%, no other pp
Cushion:- untouched, resized only
Work Boots:- untouched, resized only.
100-400mm lens:- untouched, resized only
Raindrops on car headlight:- untouched, resized only.