Canon PowerShot S120

Specifications

• Released: 2013
• Sensor: 1/1.7" BSI-CMOS, 12.1 megapixels
• Lens/Zoom: 5× optical zoom (24–120mm equivalent), f/1.8–5.7
• Display: 3.0" TFT-LCD touchscreen (922k dots)
• Image Stabilization: Optical (IS)
• Storage: SD / SDHC / SDXC (UHS-I compatible)
• Power: Rechargeable NB-6LH Li-ion battery
• Video: Full HD 1080p at 60fps
• Weight: Approx. 217g (with battery and card)

Overview
The Canon PowerShot S120 is a premium compact camera that combines portability with impressive performance. We use it inside an Ikelite underwater housing, and it consistently delivers crisp, clear images — even in challenging low-light conditions. While it doesn’t have the interchangeable lens flexibility of larger systems, its bright f/1.8 lens and responsive autofocus make it a strong underwater companion.

One drawback from our experience: the time it takes to save each image can feel long, especially when shooting fast-moving subjects underwater. In those moments, the camera’s buffer speed can be the difference between catching or missing a fleeting shot.

Image & Video Quality
The 1/1.7" BSI-CMOS sensor and DIGIC 6 processor produce vibrant, detailed images with excellent dynamic range. Low-light shots retain clarity without excessive noise, and underwater colors remain natural with minimal post-correction. Video performance is equally strong, with smooth Full HD 1080p capture at 60fps — perfect for documenting dives in motion.

Underwater Use
In the Ikelite housing, the S120 handles comfortably. The wide 24mm equivalent starting focal length is great for reef scenes and close encounters, while the optical IS helps keep shots steady in surge or current. Touchscreen controls remain responsive through the housing’s interface.

Verdict
The Canon PowerShot S120 continues to serve us well on dives. Its sharpness, low-light capability, and compact form make it a favorite for travel and underwater photography. While the slower write speed can be frustrating for action shots, the overall image quality and reliability outweigh this limitation.