Hi,
I've been shooting a lot of action shots lately of the swim team that my kid is on and also a number of surfing shots. I keep reading that the best shot is to have it in manual mode, but it is hard to keep a focus on a moving subject like the surfer. I use a 70-300mm AF-S w/VR f/4.5-5.6 (love the lens btw) and I keep it in action mode. How can I control the focus of my moving subject and what type of settings would be good to use (i.e. nice sunny day). Any help would be greatly appreciated.
If you would like to check out my shots, my Instagram is tobinkoehler. Would be nice to here a critique from a professional.
Thanks again!
Comments
You can also try 3D focusing, which is said to work better if motion is irregular. In this mode, further information is processed by the camera's brain, including color, and it can often follow a subject that darts about or is not moving steadily. It can also jump to the wrong subject, though, if it loses the one you've chosen.
In all cases, you're probably best off using the center focus point, which is more sensitive than the others. Make sure to recenter it from time to time as it's easy to move by accident. Use the [OK] button to recenter.
You should also practice panning. If your subject is a swimmer and moves at a fairly uniform speed, practice moving the camera along with him or her, and this will make the AF job easier. The closer the subject is to the original focus point, the more likely it will stay put.
Another option if you have difficulty locking focus, and your subject is far enough away to allow a bit of slop in depth of field, is to switch your camera to back button focus. This takes some practice to get used to, but the idea here is that AF only operates when you push the back (AE/AF) lock button. When you let go of the button, the camera reverts to release priority and will shoot without requiring a perfect focus lock. If the subject is within your depth of field, you get it even if the camera does not think it's perfectly focused. If you were in the usual shutter-button AF mode, the camera may continue to hunt for focus, and if it doesn't lock on, it will refuse to fire. This mode works well for shots at flying objects where the sky makes AF difficult, and also if you can prefocus on an area and wait for your subject to arrive. The problem, of course, is that if you forget to focus you get a blurry shot, just as you would if you manually focus wrong. It takes some practice to remember to do it.
I have been trying to get the back button habit, because you can leave the AF mode at C, giving continuous servo focusing while the button is pushed, but when you let go of the button you can recompose at leisure.
Back button focusing is a menu choice, in Setup > buttons > AF ON.
Like I said before, if you have time to check out my instagram shots, I would love the feedback.
Thanks again!
TBK
I have used various free dropbox type services, to which one can link, and these have at least some virtue in allowing bigger files, but many have their own viewers that chop pixels and also strip out EXIF info. They also don't do very well at isolating pictures, so anything you put on will be find-able to anyone who links to one.
For basic viewing of the occasional shot, you might try Jumpshare, which allows you do download a picture and then makes a link to it. It includes a desktop icon to which you can drag a file, whereupon it puts the URL in your clipboard.
So for example, here's one copied a while ago to demonstrate the results from a home made macro lens: (see here)
Note that as usual, EXIF info is stripped out, and in this case my save was, though not cropped, severely down-sampled to 700 pixel width, which makes it work faster and is sufficient for the net if the sampling is well done.