Medium Format 44×33 mm Sensor vs. 1/1.3-Inch Mobile Sensor (9.6×7.2 mm)
Comparing 2 standards across 10 specifications. 10 key differences identified.
The 44×33 Medium Format Sensor (measuring 43.8 × 32.9 mm with an active surface area of ~1441 mm² and a 54.78 mm diagonal) provides approximately 1.67× the physical surface area of a 35mm full-frame sensor. Operating with a 0.79× 'reverse crop factor' and a native 4:3 aspect ratio, it is the digital medium format standard deployed in mirrorless systems by Fujifilm (GFX series) and Hasselblad (X system).
The 1/1.3-Inch Sensor format (measuring approximately 9.6 × 7.2 mm with an active area of ~69.1 mm² and a 12.0 mm diagonal) is the modern flagship smartphone camera sensor format. Operating with a ~3.6× crop factor and ultra-high pixel counts (50 MP to 200 MP with 4-in-1 / 16-in-1 pixel binning), it powers flagship mobile photography.
Specification Comparison Table
10 Parameters| Parameter / Spec | ||
|---|---|---|
|
Dimensions (Width × Height)
|
43.8 × 32.9 mm (1.724 × 1.295 in) | 9.6 × 7.2 mm (approximate nominal dimensions) |
|
Diagonal Dimension
|
54.78 mm | 12.0 mm |
|
Active Surface Area
|
1441.0 mm² (approx. 1.67× larger than 35mm full frame) | 69.1 mm² (approx. 2.45× larger than 1/2.3" action cam sensors) |
|
Native Aspect Ratio
|
4 : 3 (1.33 : 1) | 4 : 3 |
|
Crop Factor (Relative to 35mm)
|
0.79× (Reverse crop / wide-angle focal multiplier) | — |
|
35mm Equivalent Focal Length
|
Multiply lens focal length by 0.79 (e.g. 63mm f/2.8 lens ≈ 50mm f/2.2 full-frame equivalent) | — |
|
Flagship Camera Implementations
|
Fujifilm GFX 100 II / 100S / 50S, Hasselblad X2D 100C / 907X 50C, Pentax 645Z | — |
|
Crop Factor
|
— | 3.61× (relative to 35mm full frame) |
|
Pixel Binning Architecture
|
— | Tetra2pixel / Quad Bayer: Combines 0.6 µm subpixels into 2.4 µm virtual pixels at 12.5 MP output |
|
Flagship Deployments
|
— | Samsung Galaxy S23/S24 Ultra (ISOCELL HP2), iPhone 14/15/16 Pro main camera (1/1.28"), DJI Action 4/5 Pro |