I test my new Panasonic GH4, side-by-side versus my Panasonic GH3 to see a comparison on crop factor, rolling shutter, high ISO, dynamic range, slow motion, wi-fi, and various bitrates in 1080 and 4K. Video equipment Griffin uses: griffinhammond.com/gear PANASONIC GH4 on Amazon amzn.com/B00I9GYG8O?tag=griffhammo-20 PANASONIC GH3 on Amazon amzn.com/B009B0WREM?tag=griffhammo-20 GH4 unboxing with angry cat test footage in 4K www.youtube.com/watch?v=XWBrY8MgP_I&list=PLAY14NVB179Y6eOixFFAmf4Vg9jwM5kB5 How to set up your GH4 for filmmaking www.youtube.com/watch?v=6NgtBUIQPbM&list=PLAY14NVB179Y6eOixFFAmf4Vg9jwM5kB5 Follow Griffin on social media: griffinhammond.com/social