How well does the A99 work for sports photography

Started 5 months ago | Discussions thread
RichV
Veteran MemberPosts: 5,398
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Re: a question about AF cluster and a comment
In reply to William Porter, 5 months ago

William Porter wrote:

sean lancaster wrote:

I would like focus points on the rule of thirds cross points. I often like to shoot closer shots of people and have the closest eye in focus. I often try and get this eye in a rule of thirds cross point (upper right or left typically). With the focus points in the center (on my D600) I focus and recompose. On my 5N, I can compose and touch my LCD right on the eye and snap - quick and accurate focus. On my RX1, I can choose a spot that falls outside of the A99 AF points and the camera will focus where I've moved the focus box like this...

Sean,

I can see about four different ways to deal with this problem.

  1. Focus and recompose. Not a good option if (a) you're close to the focal plane and/or (b) you're using a very wide aperture for very shallow depth of field. Or (c) you just don't like focus and recompose.
  2. If you had the focus points where you needed 'em, you could set the autofocus option to "local" (selective point), then fiddle with the joystick or controller to get a point on the right or left side selected as the main, active focusing point. I used to do this but almost exclusively with portraits where I had the time to fiddle with the focus. I never liked it much.
  3. The alternative — and the approach I now prefer, since getting the A77 — is to use focus magnification, move the joystick to select the magnified area, and focus manually. This isn't any quicker than #2 but it works anywhere in the scene regardless of whether there's a focal point there are not. And it's 100% accurate.
  4. Manual focus with peaking. Unlike #3, this approach is not 100% accurate, but it's quicker.

The choice that's pertinent to this thread is the one between #2 (selecting the focus point) and #3 (using focus magnification). Personally I think the advantage falls to #3 and by a wide margin. I wouldn't be terribly unhappy to give up the selective-focus (local) point option entirely, provided I could retain zone and center ("spot"), and provided I could also keep focus magnification.

Will

I mostly agree ... but spent a lot of time with cameras that did have a wider AF array. As an example, when I knew I wanted to compose a number of shots with the AF biased to the right, I'd just pick that rightmost point and it would stay there, no matter whether my subject moved toward or away from me; the AF worked more quickly than I could do it with focus magnification. (This is really about your hypothetical choice; to me there's no reason Sony couldn't have used a more liberal placement - maybe other than that it was an off-the-shelf solution taken from the A77; for the price Sony charges for the a99, it should have been better.)

--
Rich
http://philosurfer.zenfolio.com/

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