Full frame, APS-C or Micro 4/3 for diving? Understand the impact of sensor size on your underwater images and the choice of your dive housing.
The aspect ratio defines the width/height proportions of the image. 3:2 (standard photo, panoramic) is dominant among DSLRs and mirrorless cameras. 4:3 (more balanced) is used by Micro 4/3 systems. 16:9 is reserved for video.
The physical size of the sensor is crucial for image quality, depth of field, and lens performance.
| Full Frame | APS-C | Micro 4/3 | |
|---|---|---|---|
| Size | 36 x 24 mm | 23.6 x 15.7 mm | 17.3 x 13 mm |
| Crop Factor | 1x | 1.5x | 2x |
Micro 4/3 pour le voyage (compact), APS-C pour la polyvalence, Full Frame pour la basse lumiere (caisson volumineux). Cela depend de votre priorite.
En macro oui (agrandit le sujet), en grand angle non (reduit le champ de vision, necessitant un objectif plus large).
Le 4:3 est plus equilibre pour les portraits d'especes. Le 3:2 est plus panoramique pour les recifs. Le choix est esthetique.
| Low Light Performance |
| Excellent |
| Very Good |
| Good |
| Housing Size | Large | Medium | Compact |
| Housing Cost | 2000-4000 EUR | 1000-2500 EUR | 800-1500 EUR |
| Ideal for | Professionals, low light | Versatility, travel | Travel, video, macro |
In underwater photography, compactness is a significant advantage: less drag in currents, easier handling to frame moving subjects, and lighter weight for travel. The Micro 4/3 system is very popular among traveling divers. APS-C offers an excellent compromise. Full Frame systems are ideal for professionals working in low light conditions.