Canon PowerShot G9 vs OM System Tough TG-7

Specifications at a Glance

• Canon PowerShot G9 – Released 2007; 12.1 MP CCD; 6× optical zoom (35–210 mm equiv), f/2.8–4.8; RAW support; optical IS; manual controls; in Ikelite housing with DS-51 strobe.
• OM System Tough TG-7 – Released 2023; 12 MP BSI-CMOS (1/2.3"); 4× optical zoom (25–100 mm equiv), f/2.0–4.9; RAW support; sensor-shift IS (2.5 EV); rugged, waterproof to 15 m; advanced macro; 4K video; Wi-Fi, GPS.

Overview
The G9 feels like a classic prosumer compact — sturdy, manual-ready, and dependable underwater with external strobes. It excels in controlled underwater scenes and delivers vivid colors and sharp transitions. The TG-7 is the ultimate rugged companion, built for harsh environments. Its compact profile, bright lens, macro prowess, and 4K video make it versatile — great for adventure and macro, with unmatched durability. 

Image Quality
G9: Delivers rich color and sharp detail, especially with the DS-51 strobe. Excellent tonal rendition from the CCD sensor. TG-7: Offers clean, vibrant images in various conditions. The macro and close-ups are exceptional — easily capturing subjects mere centimeters away. 

Underwater Performance
G9: Fast processing and reliable external flash setup. Ideal for active subjects underwater.
TG-7: Built-in shooting modes, macro features, and ruggedness make it perfect for spontaneous and demanding environments. Its slow motion and 4K video add extra versatility.  

Handling & Ergonomics
G9: Larger, with familiar DSLR-style controls — excellent in housings, but bulky to carry.
TG-7: Compact and highly intuitive. Its buttons work well even when wearing gloves — ultra-portable and ready for action. :contentReference[oaicite:3]{index=3} Strengths

• G9: Superior detail, color, manual flexibility, and reliable housing performance.
• TG-7: Rugged build, macro expertise, 4K/slow-motion video, compact and travel-friendly.

Weaknesses

• G9: Bulky, no waterproofing, older tech, limited ISO.
• TG-7: Smaller sensor limits dynamic range, less lens flexibility, still learning curve for RAW processing.

Verdict
Choose the **Canon PowerShot G9** for stable, controllable underwater photography where precision, manual control, and strobe-like shots matter most. Opt for the **OM System Tough TG-7** when exploring rugged terrain or varied depths — its macro talents, 4K video, toughness, and portability make it the ultimate fast-action field camera.