Lumix g9 autofocus in burst mode

[RealImage]

I've seen it stated that autofocus is possible in some burst modes but I have not been able to do it. So I set the camera to AF-C and try it with H burst mode, which I believe is using the mechanical shutter, not the higher electronic shutter burst mode. I think whichever you use, H, M or L, once AF-C is set the camera may adjust to whatever speed it can autofocus with.

So in a room in my house I start with focus on one side of the room and slowly move the camera to the other side while holding the shutter button down but only the first burst image is in focus.

Apparently I'm doing something wrong. Why is autofocus not working?

Thanks.

 

[yslee2]

You need to use M or L speeds. See page 117 for the full-breakdown of what is happening at what setting.

https://help.na.panasonic.com/wp-content/uploads/2023/02/DCG9_DVQP1402ZA_ENG.pdf

 

[RealImage]

So I put the camera in AF-C. I set the burst mode to L. I focused on something on one side of the room and held the shutter down as I scanned slowly across the room. The last bunch of photos were not focused. The whole thing seems rather complicated. Unless there's a simple solution I think I'll put this down the list of things to deal with at this time.

 

[alcelc]

Were you using multi focus boxes mode too?

If yes, theoretically GX9 should lock on new focus (if any, if it manages to catch up with the panning speed of the camera to lock on one, and if it could capture it before the camera moved etc etc) on every shot.

Just tested it on my GX9 & 14-140 (f/3.5 version) mk-I. Under reasonable lighting condition (shots were taken at f/4.3 @140, 1/320" and ISO200), A mode, AFC, Multi boxes mode, Burst-H, e-shutter (eliminate shutter shock of this combo), panning the camera quite slowly from end of the scene to the other end until buffer full. I took 74 shots in total, most shots were generally looking to have something reasonably sharp (no chance to do 1:1 examination on my computer screen yet.)

So I trust GX9 could do it under certain condition. However as GX9 is merely an upper entry class to mid range model, I always have better result from it's bigger brother G85 on this sort of applications. Surely G9 class should do it much better .

Thankfully GX9 should have an improved AF system. I have less confidence on its predecessor GX85 (our ex main camera) on this front.

My 2 cents.

 

[RealImage]

Were you using multi focus boxes mode too?

No I wasn't. I'll have to return to this project some other time. Thanks.