4K UHD 2160p close up of a Bee on a Dandelion with GH4 at close focus with 15mm F2.8 Sigma full frame fisheye lens @F5.6 that I normally use with my full frame Sony VG900 camcorder.

4K UHD 2160p close up of a Bee on a Dandelion with GH4 - YouTube

https://farm6.staticflickr.com/5101/13920485309_15a4c74c62_b.jpg
https://farm8.staticflickr.com/7180/13920485319_1978a1e166_b.jpg

Eleven second clip rather short to appreciate the finer points of the GH4! On this 'ere iMac, which does 2K, I cannot get 2K to kick in on YouTube before the clip is over.

Ron

Am I missing something or is Youtube able to show 4k now?

Roger

Youtube has had 4K video support for almost four years now.
YouTube now supports 4k-resolution videos - CNET (http://www.cnet.com/news/youtube-now-supports-4k-resolution-videos/)

Here is the 4K video on Vimeo and the Original .MOV file (3840x2160 / 103MB is available for download.
4K UHD 2160p close up of a Bee on a Dandelion with GH4 on Vimeo

Nice but the jitteriness of the footage kind of ruins things.

4k but still a devil to hand hold without image stabilization.

I guess you could use the Panasonic Leica DG Macro-Elmarit 45mm f/2.8 ASPH. MEGA O.I.S. Lens but I think the DOF would be too shallow. Hand holding on a windy day with the subject 1" in front of the lens is not that easy ;)