IS and Sports question

[Sean Setters]

IS is pretty cool when you are trying to capture motion though. Putting the lens into mode 2 and panning at slower shutter speeds makes for some very captivating pics. Probably not as much with basketball.
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That would be a cool effect if you had a couple of Canon 580EX flashes (set to rear-curtain sync) firing off-camera and triggered by Radiopopper PX units. That wayyou'd get the blur of motion leading into the subject exposed by the flash.

[LJ2b2c]

Yep, the flash config would be neat, until my son came home and kicked my a#@ for making him miss the shot! I do see some using flash at the games, but I know it does bother some (at least my son) so I try not to use flash.


Thanks for the input. So if I'm keeping my shutter speed at say 200+, do I need to worry as much about IS?

[Sean Setters]

The general rule is 1/(effective focal length). Let's say you're using a 100mm lens on a camera body with an APS-C (1.6x) sized sensor. You multiply the focal length by the sensor multiplier, giving you an effective focal length of 160mm. That would mean you typically need 1/160 second or faster shutter speed to prevent blur from camera movement.

[LJ2b2c]

I had seen that calculation before, but thought it was more for the motion of the subject, not the camera. Thanks.