The Olympus Stylus Tough TG-4, released in 2015, is a rugged compact camera tailored for adventure photographers, featuring a 16-megapixel BSI CMOS sensor, 4x optical zoom lens (25-100mm equivalent, f/2.0-4.9), and 5-axis sensor-shift image stabilization for sharp shots in low light. It's waterproof to 15m/50ft, shockproof from 2.1m/7ft, crushproof to 100kg/220lbf, freezeproof to -10°C/14°F, and dustproof, with built-in GPS, Wi-Fi, e-compass, and manometer for outdoor tracking. Key features include RAW shooting, advanced macro modes (up to 1cm close-up with focus stacking and bracketing), 5 underwater shooting modes (including HDR), Live Composite, interval timer, and Full HD 1080p video at 30fps with high-speed options up to 240fps. The 3-inch LCD offers 460k-dot resolution, powered by a rechargeable LI-92B battery.

Paired with the FD-1 Flash Diffuser, an optional waterproof accessory compatible with the TG-4, the setup excels in close-up and macro photography by softening the built-in flash output to reduce harsh shadows and distribute light evenly around the lens for more natural illumination—ideal for portraits, insects, or underwater subjects, though it disables the camera's LED light and may affect exposure in varied conditions.