Description
The Askar 80ED is designed with three imaging accessories: a 0.7x reducer, a 0.85x reducer, and a 1.0x flattener. Users can choose the appropriate accessory based on their needs when capturing objects with the 80ED.
Specifications
| 1x Flattener | |
| （After attaching）80ED Focal length | 560mm |
| （After attaching）80ED Focal ratio | f/7 |
| Lens Number | Triplet design(including one ED glass) |
| Image circle | APS-C |
| Back Focus | 55mm（from the base of M48 male thread） |
| Weight | 0.42kg |
| Rear-end thread type |
M54×0.75 M48×0.75 (M48×0.75 filter thread inside) |
| 0.85x Reducer | |
| （After attaching）80ED Focal length | 476mm |
| （After attaching）80ED Focal ratio | f/5.9 |
| Lens Number | Triplet design(including one ED glass) |
| Image circle | APS-C |
| Back Focus | 55mm（from the base of M48 male thread） |
| Weight | 0.44kg |
| Rear-end thread type |
M54×0.75 M48×0.75 (M48×0.75 filter thread inside) |
| 0.7x Reducer | |
| （After attaching）80ED Focal length | 392mm |
| （After attaching）80ED Focal ratio | f/4.9 |
| Lens Number | Triplet design(including one ED glass) |
| Image circle | APS-C |
| Back Focus | 55mm（from the base of M48 male thread） |
| Weight | 0.32kg |
| Rear-end thread type |
M54×0.75 M48×0.75 (M48×0.75 filter thread inside) |
| Product Size Diagram |
| Installation |
| Optical Path Diagram |
| Spot Diagram |
| Longitudinal Aberration |
| relative illumination diagram |
Ressources supplémentaires
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