As well as being compared against other waterproofs and compacts, the Olympus Stylus Tough TG-870 is also often compared to mirrorless and travel zooms. The Olympus Stylus Tough TG-870's top rivals come from Olympus (such as the Tough TG-4 and the Stylus Tough TG-860) and Panasonic (such as the Lumix DMC-TS6 and the Lumix TS25)
Generally, some of the advantages of the Olympus Stylus Tough TG-870 compared to other waterproof competitors include: it has a built-in flash, has a slightly wider wide angle lens (21 mm vs 25 mm), has a slightly larger screen (3" vs 2.7"), has a significantly higher resolution screen (921k dots vs 230k dots) and has better image stabilization (lens vs none).
However, on average it records higher quality movies (1080p @ 60fps vs 4K @ 12fps), doesn't record high-speed movies (none vs 240 fps), lacks and external mic jack, is slightly heavier (221 g vs 183 g) and slightly shorter exposures (4 seconds vs 60 seconds).
Generally, some of the advantages of the Olympus Stylus Tough TG-870 compared to other compact competitors include: it has a much wider wide angle lens (21 mm vs 28 mm), slightly higher maximum light sensitivity (12,800 ISO vs 6,400 ISO), has a screen which flips out, has a slightly longer battery life (300 shots vs 210 shots) and is newer (january 2016 vs july 2012).
However, on average it has a slightly narrower aperture (f/3.5 vs f/2.5), records higher quality movies (1080p @ 60fps vs UHD @ 30fps), has a slightly smaller screen (3" vs 3.3"), doesn't record high-speed movies (none vs 120 fps) and takes significantly lower resolution photos (9.7 MP vs 20 MP).
Generally, some of the advantages of the Olympus Stylus Tough TG-870 compared to mirrorless interchangeable-lens competitors include: it has image stabilization (lens vs none), slightly higher maximum light sensitivity (12,800 ISO vs 6,400 ISO), has a screen which flips out, is newer (january 2016 vs september 2013) and is slightly smaller (compact (113×64×28 mm) vs standard size (129×90×47 mm)).
However, on average it doesn't have a viewfinder (none vs digital), doesn't record high-speed movies (none vs 1,200 fps), takes significantly lower resolution photos (9.7 MP vs 16.3 MP), has a slightly smaller sensor (1/2.3" 6.17x4.55mm vs APS-C 23.6x15.6mm) and lacks and external mic jack.
Generally, some of the advantages of the Olympus Stylus Tough TG-870 compared to travel zoom competitors include: it has a slightly wider wide angle lens (21 mm vs 25 mm), has a built-in GPS, slightly higher maximum light sensitivity (12,800 ISO vs 3,200 ISO), has a screen which flips out and has a CMOS-family sensor (CMOS vs CCD).
However, on average it has slightly less zoom (5x vs 30x), doesn't have an OLED screen (LCD vs OLED), is less popular and has a slower max shutter speed (1/2000 of a second vs 1/3200 of a second).
