One of the concerns with shooting on micro four thirds is with it's cropped view. In addition, shooting at 4K on the GH4 camera will further crop your view. If you follow the blog, you would have seen me testing some de-fishing techniques using a Rokinon 7.5mm Fisheye Lens. Though not perfect, i've been able to use this for some smaller projects with acceptable results. Check out the video below for examples.
[Tip: When using this technique with a person, keep a distance and place them in center frame whenever possible. Side distortion is not always flattering..]
Though not a perfect solution, this sub $300 dollar lens defished is still capable of capturing a wider field of view than the $1K 7-14mm F/4 Lumix. Of course with the defish technique your project will look it's best at a final output of 1080p. Here are a few screengrabs showing how much view is lost during the defish process.
Original Fisheye View - GH4 7.5mm MFT Fisheye
4K Defished to 1080p - GH4 7.5mm MFT Fisheye
Original Fisheye View - GH4 7.5mm MFT Fisheye
4K Defished to 1080p - GH4 7.5mm MFT Fisheye
The small form factor and light weight also make it easy to carry and perfect for small stabilizers. So if you're shooting with a GH4 and have to work with interior or tight spaces, defishing from a 4K file is an interesting option to be aware of. Definitely a lens GH4 shooters should have in their bag, and available for just under $300 (click here).
Rokinon 7.5mm Fisheye Lens for MFT Cameras
Panasonic Lumix DMC-GH4 MFT 4K Camera
Here's another example of a video shot with the GH4 and the Rokinon Fisheye Lens (de-fished).
FCPX has it's own fisheye plugin, but may not work very well for some corrections. You can also check out the FCPEffects Plugin to remove the Fisheye Look (found here).
FCPX Fisheye Removal Plugin
