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 | 4×6.5 |
| Size | 40.0 × 65.0mm |
| Diagonal | 76.3mm |
| Crop factor | 0.57× |
| Area | 2600mm² |
| Aspect ratio | 0.62 |
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