Originally posted by thePiRaTE!! You have to run the diagnostic mode so it can find them first I think. Never done it myself, but it'll be in the manual.
I found the issue. It has to do with V1.00 firmware and the 2 second delay. I updated it to V1.01 and it is fixed.
Quote: I noticed that the first two shots, you hit the focus better than the camera did on the bird. The third shot, the camera finally dialed it in, but your MF shots are consistently focused more precisely.
Ya, I noticed that and that makes this test less precise. Perhaps I should have manually focused both lenses. But I was in a hurry to get the A*300 lens packed up and in the mail to the new owner. I did use a tripod and 2 second delay though. I may have to dial in the focus on a few of my lenses with the K20D. But the fact that I had some shots in focus means that AF is not as reliable as a good eye and manual focus. Ugh! I also forgot that I had set the camera on JPEG only and only 6MP. Oh well. It did show enough.
Quote: I also noted that the DA seems to have a brighter image. If you're shooting manually, it could be something to do with the lens, if its in an auto mode with the DA, perhaps its just the camera compensating.
I shot P mode and manually adjusted the F stop, letting the camera compensate with the shutter speed.. er.. exposure time. I am sure that if I set the exposure to + 1/2 stop with the A*300, they would have been exposed similarly. Both lenses are fantastic, but I like the weather sealing and autofocus for my old eyes.
This test did reassure the buyer that he is getting a wonderful lens, made me wonder if spending a whole bunch more money
was really worth it, and answered some questions that others were asking me about the differences between the two lenses. And since I had them both together for a couple days, why not?