AF Question for A99

Started Apr 29, 2013 | Discussions thread
VaBoater
Contributing MemberPosts: 719
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Re: AF Question for A99
In reply to shadowfax123, Apr 29, 2013

Given the identical goals behind the AF-D and AF-C modes, it would have been convenient if Sony had merged this with the AF-C function, having the camera using the 102 focus-assist points automatically if a compatible lens were attached. Maybe in the next camera.

It works identically to “AF-C” mode, the only difference being that once it achieves focus using the standard phase-detect array, it will then use the 102 supplemental focus points baked into the sensor while attempting to track the moving subject. This feature is greyed out unless you have a compatible lens attached (the list of compatible lenses was presented back in in Chapter 1, starting on page 25).

From the Friedman book

The List.

By Spring 2013, Sony plans to provide a firmware update so these lenses will work too: Planar T* 85mm F1.4 ZA, Sonnar T* 135mm F1.8 ZA, 70- 300mm F4.5-5.6 G SSM, 70-200mm F2.8 G, 100mm F2.8 Macro, 300mm F2.8 G.

Right now this feature works only with a limited selection of lenses (which will expand with future firmware updates). Which lenses will it work with? Right now: Vario-Sonnar T* 24-70mm F2.8 ZA SSM, 50mm F1.4, 28- 75mm F2.8 SAM, 70-400mm F4-5.6 G SSM, 500mm F4 G SSM, 300mm F2.8 G II (New lens).

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