Lead camera analyst for the PCMag consumer electronics reviews team, Jim Fisher is a graduate of the Rensselaer Polytechnic Institute, where he concentrated on documentary video production. Jim's interest in photography really took off when he borrowed his father's Hasselblad 500C and light meter in 2007. He honed his writing skills at retailer B&H... See Full Bio

Is GoPro better than DSLR?


The Sony A7S II has been a go-to mirrorless camera for underwater video since its release in September of 2015. For the Sony loyalists looking for top-of-the-line image quality in a small and compact form, the A7S II is for you. It embodies a 12.2MP full frame CMOS sensor and can shoot true cinema 4K video at 24fps, as well as UHD 4K at 30fps and smooth slow-motion video at HD 1080p video up to 120fps. Paired with an impressive 5-axis in-camera image stabilization you can get ultra-sharp, steady footage even when shooting hand-held.
Ultimately, your choice in action camera should come down to performance and ease of use. We've filmed hours of footage with many of the major contenders to determine where each device stands in the field. Some excel in all manner of extreme situations, while others can fall apart underwater or once the sun goes down. And what good is an action cam if it's not built for action?
Now, as mentioned previously, the 4K Video Type is an important factor to consider as well. In order to record 4K 60p, the Panasonic S1 crops the sensor to a APS-C sensor at 4:2:0 8-bit. Although this is not as impressive as the Full Frame 4K 60p recording available with the Canon 1DX MkII, it is still a leap forward in full frame mirrorless technology and a particularly favorable feature.
The Sony a7II is the only full-frame mirrorless camera to offer in-body image stabilization systems and its performance is excellent. The body is comfortable to shoot with and offers a broad set of features that should appeal to both still and video shooters. The Sony a7 II has a 24.3MP resolution, great Full HD video capabilities and fast auto focus.
Then there's resolution and video quality. You'll want a camera that can record in 4K for sure. The top-end models from DJI and GoPro offer 60fps 4K with digital stabilization that's absolutely incredible. They're also not limited to ultra-wide views; you can set a narrower angle to remove lens distortion, making them solid choices for vlogging and travel logs.

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