How does one change the spot metering mode? Apparently there are four, but how to select?
Thanks

Four?

If you press and hold the function button to which you've assigned spot metering, and then try pressing it a few times it toggles between various modes.

Thanks Duncan. I think the four are: Max-Min/Max/Min/Manual. I've managed to get into manual, but now the press-hold-toggle no longer works, so I'm stuck there. I'll try a reset.

Update:

A camera reset got me back to the default Max-Min, but I haven't mastered the trick of cycling through the other options.

Here's a link to a JVC update to the LS300 user manual which describes the new spot meter features:

http://pro.jvc.com/pro/attributes/4k/manual/GY-LS300_v2.0.pdf