With the world’s fastest autofocus system (A6000)

Started 8 months ago | Discussions thread
Digital Nigel
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Re: re: few questions on practical aspects of the a6k
In reply to erringtont, 8 months ago

erringtont wrote:

GaryW wrote:

Certainly we'll have to wait for full reviews of the actual performance, but so far no one has asked if the limitations on the NEX 6's Hybrid PDAF AF system will continue to be the case with the a6k.

For example:

On the NEX 6 PDAF only works with compatible lenses used at apertures of f6.3 or wider. Has that been addressed/changed in the a6K?

Actually, in P mode, you can use any aperture you want -- the camera will change the aperture between focusing and snapping the photo. You can watch the aperture in the lens and see! This is in single-shot mode, though (AF-S) not AF-C.

Thanks for the tip regarding Program mode. I'll give that a try, however Sony is pretty specific about the limitation. In the NEX 6/5R Handbook Page 131:

"When the aperture value is greater than F6.3, Phase Detection AF is unavailable. You can only use Contrast AF."

It may well be focusing wide open, but using CD not PD.

Will earlier lenses that had firmware updates to enable the NEX 6's PDAF system still work on the new model or will additional FW updates be needed?

Will the viewfinder image still pulsate when AF-C is active and aperture values are greater than f6.3?

Interesting. Even in P mode, it'll still do this pulsing over f6.3.

Will third party lenses be able to take advantage of this new AF performance (after all Sony did open the E-Mount spec)?

Other NEX 6 issues:

Focus point selection is a multi-button press exercise. My sense is there is no change in that function on the a6k.

Per jpr2 it appears that one cannot configure an "AF-On" function to any of the configurable buttons removing focus from the half shutter press.

I haven't noticed this on the Nex-6. What would you use it for?

Many DSLR's have an AF-On button on the rear of the camera (Canon & Nikon in particular) and can be configured so the half shutter press does not activate AF. This is not dissimilar to how we used to focus SLRs before AF. Very handy for focus then recompose without having to use AF-L among other benefits.

The NEX 6 had no provision for saving user settings. This appears to have been addressed with the MR on the mode dial, but we'll have to wait and see how flexible that feature will be.

Is this new for Sony? The past cameras I've seen in the past don't have any custom setting modes.

Not sure about other Sony models, but many cameras have such a feature. Even my little LX-5 has two user settings memory selections. It helps to avoid menu diving considerably.

The tiny Sony RX100 has three user memory settings, whereas my NEX-7 has none. It's obviously overdue in the Alpha range.

 Digital Nigel's gear list:Digital Nigel's gear list
Sony RX100 Sony Alpha NEX-7 Sony a6000 Sony E 18-55mm F3.5-5.6 OSS Sony E 16mm F2.8 Pancake +7 more
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