Z30 HDMI output questions

[bokemon]

Hello folks,

I have an idea to use a Z30 along with a lens or telescope plus external HDMI 4K monitor to use as a spotting scope / digiscope. (But not literally digiscoping with an eyepiece and lens) There is NO recording device attached to the HDMI. Regarding the HDMI output at 4K,

1) Does it use the full area of the sensor? (And then downsizes or bins the pixels in such a way that it still works well with low light? i.e. it will average the pixel values instead of just skipping pixels)

2) What zoom levels would be available - while not throwing away in-between pixels?

3) I assume it can get clean output in just "live view" mode, and doesn't require recording?

4) What difference does it make if the camera is in video or photo mode?

5) I heard that there's an overheating problem. Any other gotchas?

The main use case for now is just as an archery target spotting scope. I have a camera + telephoto lens + 4K portable monitor + battery all mounted on a tripod. Currently using a micro 4/3 camera, but need more zooming and light gathering in the early evening.

 

[bokemon]

Update for what I found out so far, now owning the camera:

1) At least in video mode, where I can get a clean HDMI output: Yes, it seems to use the full area of the sensor, except when Electronin VR is turned on, then it seems to zoom in around 10%.

2) quoted "50% zoom" (one press on the magnifying glass)- seems to actually be 3x zoom, based on FOV

"100% 1:1 zoom" - seems to be even more than that - maybe it's 1:1 for the rear LCD screen?

3) Yes in video mode, but I have not figured out how to get clean HDMI in photo mode

But what I am really looking for is a 1:1 zoom where the center 3840 x 2160 pixels on the sensor get sent out the HDMI output, also full screen and in 4K. Unfortunately the only zoom settings give: