This little squirrel was traveling back and forth throughout my backyard and every time it was taking one of the chestnut's that my kids were playing with. After 5-6th one I got curious and came down with my camera. It posed for me for a split of second so I took the shot. Sadly K-01 is very slow at taking shots so I had to wait for another round to retake it.
Both shots taken @ f4.0 1/125 but iso is different - in AV mode ranged from 160 - 320.
Just resized and treated only with slight bump in contrast and mild sharpening after resizing.
I think that old vivitar did nicely .. especially the colors are nice and bright - although the light wasn't good.
1st one is aproximately 1/4 crop :
2nd is about 1/3 crop: