When comparing Panasonic Lumix G7 vs Fujifilm X-S20, the Slant community recommends Fujifilm X-S20 for most people. In the question“What are the best mirrorless cameras?” Fujifilm X-S20 is ranked 4th while Panasonic Lumix G7 is ranked 10th. The most important reason people chose Fujifilm X-S20 is:
Large grip with a large battery, CIPA-rated battery life of up to 800 shots.
Specs
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Pros
Pro MFT lens mount allows for a wide variety of lenses to choose from
Micro Four Thirds system is a standard used by Panasonic, Olympus, Sigma and many others so you're not locked into a having to buy lenses from one manufacturer.
Pro Shoots good quality 4K@30 video
The G7 takes footage from a crop of the sensor and includes focus peaking and zebra striping tools allowing you to get good quality video.
Pro Large grip
Large grip with a large battery, CIPA-rated battery life of up to 800 shots.
Pro 20 fps continuous shooting
8fps continuous shooting with manual shutter, 20fps with the electronic shutter.
Pro Hi-Speed video
240fps High-Speed Video.
Pro Built-in flash
Cons
Con Can't zoom in on video in playback mode
There's no way to zoom in on the screen in playback mode to check details of the footage.