I recently bought a DA 55-300mm f/4-5.8 ED WR lens, but I'm not 100% sure that I've ended up with a good unit. I've read the reviews for this lens on the forum and I've noticed some people saying that they ended up with a dud lens that wasn't very sharp at 300mm. And after my first test run (just in the backyard) I wasn't satisfied with the images that I was getting. I thought maybe I just wasn't holding it steady enough (I'm more used to my Sigma 17-50mm which I'm really happy with).
So, what I've done here is zoomed the lens all the way to 300mm, sat it on a table, set it to a 2 second timer (stabilization off), auto focused on a K5 at f11 and took some shots of various objects in my yard with detailed textures as a test.
I'd love to get some opinions on the sharpness of these shots below. I'm not sure if it's just my eyes, or I'm expecting too much. I've uploaded them unedited to an image hosting site, so you'll find them to be clickable to see the original resolution.
I'm no photography expert, so if anyone has suggestions on a better way to test the lens, I'm all ears.