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GX8, EM5 ii: which one has better face detection focus?

Started Nov 22, 2015 | Questions thread
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HaoAndHui Contributing Member • Posts: 539
GX8, EM5 ii: which one has better face detection focus?

I have GX7 and used a lot of face detection focus for both street photographs and family photos, I found in following conditions it can be slow, inaccurate or just doesn't work:

- low light

- people's face only occupies small portion of the frame (say 1/6) especially when face is around the corner

From reviews I can see that GX8 has better focus speed, but to me normal AF-S is technically different from face detection focus, as single focus, no matter if it's contrast or DFD, need to find either contrasting point (e.g. places with colour difference or light difference) or depth of focus (difference in distance?), and face detection as its name suggests, need to recognise faces, I guess this depends on the efficiency of the algorithm as well as the processing power.

Can people who have used either provide give me some hint on the performance of face detection focus? Probably they won't be much better than GX7, then if there's any technique I could use to improve it on GX7?

Thanks!

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