Quote:
Originally Posted by Weebl
The problem is that the distance changes rapidly and at 500+ knots at a 1/4 mile I need to be fast and accurate.
The only current solution I have right now is to put the 5D3 on the purchase list but I'd rather buy lenses more than it.
I could also use some fold down seats in the rear of the car more than a new body also.
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I think that'll be a good solution. The 5D3 will lock on and stay on. However, don't be tempted to turn on all the AF points, instead use single-point or single-point expanded and put it on what you want to be in focus. If the sky is blue and you can use f/11, then all the AF points might be precise enough, but at f/8 and bigger, the DOF can still be too shallow. Anyway, with single-point, the camera won't be as likely to grab onto stuff in the background when a plane takes a low pass.