Started Feb 3, 2013 | Discussions thread
Forum Pro • Posts: 11,105
Sharp focus on a moving subject requires the following:
- A subject large enough relative to the focus sensor that a focus sensor can track it independent of the background. The large the subject is in the viewfinder, the better the focus sensors can track the whole subject or a particular part of the subject.
- Decent contrast between subject and background
- A shutter speed fast enough to stop undesired motion blur (what you need depends upon a lot of things such as subject speed, focal length, subject distance, angle of motion relative to camera, etc...). For reference, I shoot soccer players with a 200-400 at 1/800 or higher.
- The appropriate AF settings for good tracking on your subject.
- Continuous focus after acquiring focus on the right part of the subject.
- Good, stable camera tracking technique on the desired focus sensor.
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