Being on a tripod is the most important point that some of you have made. When i took those three shots (Above) The camera was stabilized on a tripod. In my opinion you should ALWAYS and I mean ALWAYS use a tripod for macro shots. It doesn't matter how steady you hand hold a shot, it will most certainly come out blurry if you do not stabilize. I know in some certain situations, you have no choice, but if you dont have a tripod, you may as well not shoot with a manual lens. I had made that mistake many many times in the past, and wondered why the images came out just a LITTLE bit off focus like Ellen is explaining. And like Lowell explained, one millimeter back or forward, and your image is blurred.
---------- Post added 06-04-14 at 06:39 AM ----------
Originally posted by Just1MoreDave I notice there are already suggestions on focus points, which is what I was thinking, right up until I saw the lens. The only active point with any manual focus lens is the center. It's useful to remember for AF lenses but not for this lens.
Handholding might be part of the problem. Sometimes you might unintentionally rock or tilt the camera when you shoot. It might not be noticeable at regular distances, but close up magnifies these errors.
I like to use lines of text to see if the sensor and viewfinder are seeing the same thing. A flat paper with text on it is a good subject. Set up the camera on a tripod so it's pointed at a 45 degree angle to the paper. Ideally only one line of text is in focus. I have to tape the paper to the floor, because inevitably I get it almost right and the paper moves. Anyway, you can manually focus on one line, then take a shot with the lens wide open and see if you got the same line in focus in the shot. You can also use live view, focus peaking, etc. Everything should agree. (The reason for text is that I always remember what line I want in focus, but I forget numbers on a ruler or marks on a test chart.)
I agree with you Dave. I just wanted to reiterate what I was saying. Yes, focus points do matter, even in manual mode, which is the only mode I use for Macro shots. I manually turn the focus until I get focus lock, which is what I meant. Even though you have the camera in manual mode, and the lens is only looking in the center, the focus lock will still use those 11 focus points, and will be confused. So in turn, what I am saying is, use the center focus point, and focus lock, and you should be ok.