Monday, June 22, 2009
Choosing the right Focal Length and Settings
Last weeks flight shot workshop was challenging! These birds lift-off and fly to the falconer.. James Cowan in a split second. I usually like a little environment around the bird, even with flight shots so with my 200-400mm lens, I was able to pull back and create a second opportunity to catch the bird in flight.
At 260mm this shot turned out nicely with an aperture setting of F4. A sutter speed of 1/2500 sec was plenty to freeze the action, but I think ISO 320 was too high. Later in the session I moved my ISO down to 200 for better details and less noise.
The D300 AF works very well, so much better since the firmware upgrade. Setting would include the turning the focus selector to AFC on the camera for moving subjects. Inside the menu, I work with 21 point, or single sensor for flight shooting., depending on the size of the bird in the frame, and relationship to the background.
Sometimes i will go to 52 point full frame sensor for the smaller fast flyer's., like the kestrel. Also, I set the focus lock to short., and I use the rear AF button for all focusing activation., the shutter button is used only to activate the shutter., since I almost never use the VR.
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