Pen F users - some quick questions...

So tried another scenario with 25mm F1.8 lens, this time instead of being static approaching a subject. Not zig zagging but more like an arc around as I approached. At F1.8 the results were not all hat good though the Camera still nailed a few shots right.

At F3.5 the rate improved, still had issues but not as bad.

Thinking again about how the scenario with the cars is, you have an approaching subject that is reasonably big with enough detail here and there, and it's going to for the most part first "expand" in scale then start to stretch. Basically you have a mostly 2D object at first then becomes stretched which means more area to nail from the car.

In the case I did of the person you don't have that luxury. Also the fact I was moving this time takes its toll.

I was going to test at night but given the focus I already know gets worse, it's going to be just downhill from here, but sure seems to match what I recall from my experience before.

My conclusion would be- the PenF can AF reasonably well if you stop down the lens in a bright light scenario, don't move yourself too much, and ideally not use very long focals (though the one 70-300 you use would qualify as a long focal),.

Outside of this range, C-AF starts to go from bad to pretty bad/horrible (I wouldn't call a 40%-50% success and lower great), and I have been able to C-AF better with an X-E3 with the old XF35 F1.4 which is usually not a super fast lens, but the X-E3 had another jump in AF tech.

Update: I just checked the shots under the second scenario on the computer (was checking then on the camera in the field under the sun).  Yeah, the hit rate was pretty bad wide open (like 75%+ out of focus in some way to bad). With F3.5 I still got misses but some hits. Yeah, I wouldn't call this stellar. I guess the envelope under with the C-AF PenF works well is narrow, and if that's where you do your photography and want this feature then you are set. Not so much otherwise.