Negative size is the dimensions of an image taken by a camera. It is different from film format as one film format can be used for various different negative sizes.
| Name | 6×4.5 |
| Size | 56.0 × 41.5mm |
| Diagonal | 69.7mm |
| Crop factor | 0.62× |
| Area | 2324mm² |
| Aspect ratio | 1.35 |
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