Re: metering an focus on D80
- From: Alan Browne <alan.browne@xxxxxxxxxxxxxxxxxxxxx>
- Date: Sun, 29 Apr 2007 11:29:02 -0400
vasicrj@xxxxxxxxx wrote:
I am early in the learning phase. I have a Nikon D80 and want to take
some sports photos. Which metering do I use? centerweighted?
Also, I'm still confused about which focus mode to use.
The sports photos I'm considering practicing with are skateboarders at
a part so there will be lots of movement.
For a given "series" of shots in the same light, find, using the histogram and the monitor, the correct _manual_ exposure for the set. Shoot all the images at that setting. This is a key part of getting consistent exposure. OTOH, the D80 has pretty good RGB 3D metering system so it can set exp. on the fly quite well. You won't get perfectly consistent color frame to frame however as the exp. changes slightly.
For the histogram take test shots adjusting speed and aperture to get the histogram to the right without creating "spikes" on the right edge of the histo.
Record RAW.
Use a higher ISO (400) to give you more combinations of speed and aperture.
(For action, be a bit generous with DOF, say f/8 to give you or your AF a bit more tolerance. Shooting wide open gives you less focus tolerance).
I don't know the D80 but I suspect it has a continuous AF mode. These modes typically are a bit predictive so if the action focus is moving towards (or away from) you it will account for the shutter lag (eg: if the shutter lag is 60 ms, it will use the continuing change in focus to adjust for the actual release time.)
Spot focus would be useful if you keep the action centered. This is not "composition" friendly but for action shooting you can "re-compose" in photoshop after you have the shot. You can also use the larger area AF sensors but you might get some frames that are not focused where you want them.
Experiment. Have fun.
(Note: you can use flash too at about 1 - 1.5 stops under as a fill light in bright conditions to tame the contrast).
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