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Old 10th August 2015
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Ross the fiddler Ross the fiddler is offline
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Re: Is C-AF actually improved with v3.0?

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Originally Posted by brian1208 View Post
The rain cleared and we had a few moments of dry (but still cloudy) weather and the Martins + Swifts took to the air, so I thought I would try the portrait mode CAF at 9fps with my 75-300mk2

to my surprise even that showed a significant improvement in focus speed and retention and was able to lock on and hold the birds (still at around 3%-5% of frame area) for several shots before I lost track of them - its blooming difficult to keep those things in the EVF at 300mm!

A couple of attempts in landscape mode were totally useless, so whatever it is that shooting in portrait mode is doing, it works with both these lenses

I need some decent light and helpful subjects now, then may have something worth sharing
It seems that the bird's detail is a majority horizontal & with C-AF (Hi), PD-AF is used for this with all lenses, so turning the camera to vertical gives the PD-AF plenty of detail to work with then. Having the grip would certainly help with this but chasing a bird across the sky in portrait position would make it harder at keeping it in view as opposed to the landscape view. However, it is nice to know at least it works though, thanks to your testing.

I have found that for some subjects that using S-AF Low (sequential) gives me a greater number of keepers with that lens, but that's not for everything.

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Ross
I fiddle with violins (when I'm not fiddling with a camera).
Flickr: https://www.flickr.com/photos/ross-the-fiddler/
Cameras: OM-D E-M1 & Mk II, Olympus Stylus 1, OM-D E-M5.
Lenses: M.ZD12-40mm f2.8 PRO Lens, M.ZD40-150mm f2.8 PRO Lens, MC-14, MC-20, M.ZD12-50, M.ZD60 Macro, M.ZD75-300 Mk II, MMF-3, ZD14-54 II, Sigma 150mm F2.8 APO Macro DG HSM.
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brian1208 (11th August 2015)