SL2 - autofocus sensitivity in low light scenes compared to S1R

[Hendo]

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The S1R is said to autofocus down to -6 EV.

Is SL2 capable of this?

I would guess so due to the almost same sensor...but I can not find any evidence.

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[Jared]

As far as I know Leica doesn’t state a minimum brightness for AF to function.  Since it is a contrast detect system rather than phase detect that is probably reasonable.  It might well be able to handle very low light with a stationary subject and extremely high contrast, but as soon as the contrast starts to go down the amount of light required starts to increase.

In general, the AF performance—especially AF-S—should be very similar to that of the Panasonic S1R.  They may have different software algorithms and so may not be identical. I believe Panasonic is responsible for AF on both cameras and, as you say, the chips are very similar.