Originally posted by JimJohnson Great shots (as usual) Norm. Assuming you did candids of the Pine Marten - as opposed to pre-focusing and waiting for the subject to hit his/her mark? If so, how often do you find yourself overriding AF on your 55-300? Or do you use center focus and recompose? All those nearer branches like to sucker AF into making them the primary subject.
The AF with the 55-300 PLM is awesome. You can see the out of focus branches if you look closely at these images. The park staff have cut down some trees near where this guy lives. He's crawling around in those branches, and I'm peeking through all those branches with a hand held camera, and keeping the camera steady enough to focus. I was locking focus even on images I didn't take because a branch was blocking half his face and the window was extremely tight, and it was locking focus anyway. As well, the PLM adjusts so quickly, if you have it focused on a branch, you can move the camera slightly one way or the other until it locks focus on your subject, keeping the AF engaged, then shoot when it snaps into focus. Technique used for my DA*60-250 makes a DA 55-300 PLM seem like a wonder of modern technology.
I always shoot centre point focus AF.s. With the K-3 and K-1, you always have plenty of room to crop. I get the animal in focus, and if need be, zoom out to get sufficient crop room. I will (if I have time) select an alternate focus point to aid in framing.
In this one using the K-3 and PLM, the top left focal point was used to make sure the tail was in the frame, (always focus on the eye if possible) then 1000 pixels cropped off the right side to achieve the farming I wanted, giving me an approximately a 16 MP file, (same as a K-5 of K-1 in crop mode.) The shift of the selected point proved to be unnecessary in this image, I ended up cropping away what I gained in using a non central focal point, but you want to be tracking and shooting, not deciding if you have exactly the right focal point selected for each image. There are only so many things you want to be paying attention to while you're shooting. You set the camera, and live with it for a few minutes, then change and try a new setting. Changing settings on the fly will probably cost you more than it gives you. Anything over 12 MP is good as far as I'm concerned, so I don't mind at all cropping 24 MP or 36 MP to 12 or more, for an action shot.. I would rather shoot large and crop than shoot tight and not be able to do anything with it, for shots like this. These little guys move and where they were when you decided to release the shutter is often not where they are when the shutter is actually released. For landscapes, I crop nice and tight and try and use the whole frame.