Thursday 31 December 2015

canon - How to focus on fast moving objects with a low-end dslr?


I will go to an Enduro race and I want to take sharp, in focus, photos. I only have a Canon 550D, EF-S 18-55 IS and EF 50mm f/1.8. I tried using autofocus on moving motorcycles and 90% of them were out of focus.



Answer



I have not tried motorcycle events but have successfully photographed Ice Hockey matches with reasonable success so this advice is based on that.


Set the camera to shutter priority (Tv) and start with a minimum of 1/250. You may can go faster if the light permits. The smaller the aperture you can get (while keeping the 1/250 min) the better to maximise the depth of field and ensure you capture the subject. (Unless you are aiming for bokeh )


You will also need to experiment with what focus mode is going to work for you. You should have an AF Servo mode which tries to track focus on a moving object however your lens may not focus fast enough to keep up with something like a motorcycle.



An alternative then is to set to One Shot AF, find a point that the subject is passing and fix the focus on that (press the shutter halfway) and wait for your subject to come into frame. As you get a feel for it you can try tracking with the subject until it passes your preset focus point before shooting.


In either case set the camera to continuous shot mode and take as many frames as the camera will capture to maximise your chances of a good one.


Good Luck


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