Tara is a Flickr friend and will gladly help along any curious about digiscoping.
I've written her via Flickr and she was always keen to suggest.
If you want to know more about her here is a podcast/interview/blog:
http://thisweekinphoto.com …ing-wildlife-tara-tanaka/
She is the first (that I know of) person to have a digiscoped image hanging in the Smithsonian!
One thing to note about the GH4, and if you go to the link above and scroll down and see the
bunnies hoping in the air......and she mentions 4K photo in that link. The GH4 (to me) is one of
those freak cameras that can actually video capture better than it can 'image'. It's no slouch imaging
we all know that but 4K video for lots of reasons (beyond the scope of my reply) can really grab a lot
of data....and suffice it to say that 4K photo is a picture (8megapixels) taken/extracted/harvested out of
a 4K photo shoot which is actually video where you know you intend to extract images versus make a video.
I believe she states in the podcast that the bunnies were taken this way. Here is an example of a photo I
harvested in this same manner-

IMAGE LINK: https://flic.kr/p/r3DxCb
Struck a Pose
by
MedicineMan4040
, on Flickr
So this is yet another possibly reason to consider digiscoping? I know its only 8mb but it wasn't that long ago when high dollar EOS bodies had only that many mb's.
A friend of mine told me that was cheating! That I was shooting at 30fps (video) when in fact I was and in 4K Photo had the shutter at 1/2000 (which again would make a crappy video watching experience). So my reply was 'so it's not cheating using
10-12 frames per second (he was using an EOS 7Dii)?? or are you jealous of my 30 fps?'
Manual focus is interesting with the m4/3s cameras (and I'd same the same for the Sony mirrorless bodies too), interesting because today I shot with a Oly 40-150mm on my GH4. It's an F2.8 lens but the DOF is in reality 5.6
What this means is that there in an inherent focus leeway built into the crop; of course that doesn't mean you can be out of focus
but you do get this focus halo for 'free'.