| Optical Construction | 4-elements in 2groups |
| Zoom System | Linear push-pull |
| Exposure | Automatic exposure is possible in Aperture Priority mode only for cameras with TTL metering systems. Other cameras must be set in full manual. Cameras with TTL metering: All PENTAX AF and certain NIKON models |
| Focusing | Manual helical (rotary) operation (Not AF compatible) |
| Minimum Focusing Distance: | 1.6m (5.25ft.) from front lens element |
| Filter size: | 62mm |
| Diameter: | 69mm |
| Length: | 222-310mm (8.75-11.85in.)! |
| Weight: | 520gms |
| Accessories | Carrying case |
| T2 Adapter required (sold separately) | |
Datasheet (download)
KELDA-A-2012-420-800mm-T2-Lens
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