56×56 mm
Dimensions
0.55×
Crop factor
3136 mm²
Area (363% of FF)
+1.9
Stops of light vs full frame
1:1
Aspect ratio
54.9 µm
Circle of confusion
About 6 × 6 cm film#
The square medium-format frame of Hasselblad and Rolleiflex: 12 shots per 120 roll.
Typical cameras: Hasselblad 500C/M, Rolleiflex 2.8F, Bronica SQ.
Compared to other formats#
Lens needed for the same framing#
| Full-frame focal length | Equivalent on 6 × 6 cm film | Horizontal angle |
|---|---|---|
| 14 mm | 25.6 mm | 95.1° |
| 24 mm | 43.9 mm | 65.0° |
| 35 mm | 64.1 mm | 47.2° |
| 50 mm | 91.5 mm | 34.0° |
| 85 mm | 155.6 mm | 20.4° |
| 135 mm | 247.1 mm | 12.9° |
| 200 mm | 366.1 mm | 8.7° |
Equivalent aperture for depth of field#
| On 6 × 6 cm film | Full-frame equivalent |
|---|---|
| f/1.4 | f/0.8 |
| f/2 | f/1.1 |
| f/2.8 | f/1.5 |
| f/4 | f/2.2 |
| f/5.6 | f/3.1 |
| f/8 | f/4.4 |
Cameras with a 6 × 6 cm film frame#
7 cameras in our database.
- Mamiya RB67 1970
- Pentax 6×7 1969
- Pentacon Six 1966
- Mamiya C 1956
- Voigtländer Brillant 1932
- Pentax 645
- Fujifilm GX680
Frequently asked questions#
What is the crop factor of 6 × 6 cm film?
0.55× (diagonal 79.2 mm vs 43.3 mm for full frame).
How big is a 6 × 6 cm film sensor?
56 × 56 mm, an area of 3136 mm².
Is 6 × 6 cm film good in low light?
At the same exposure it gathers 1.9 stops more total light than full frame, so expect roughly that much less visible noise at equal print size. Modern processing narrows but doesn't erase the gap.
Last updated October 03, 2026 · How we calculate · Sources