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Product Description
f/4.5-5.6 AT-X 840 D
The latest lens the AT-X 840D is still the smallest lens to zoom to 400mm with a bright f/5.6 aperture. This lens incorporates SD (APO) glass to give clear sharp images and has an internal focusing system which increases AF speed and responsiveness. The zoom ring can be locked onto 80mm making it easy to carry and the lens hood features a control wheel to adjust polarising filters.
- Mount availability: Canon EOS, Nikon-D
- Focal length: 80 to 400mm
- Maximum aperture: f/4.5-5.6
- Minimum aperture: f/32
- Optical construction: 16 Elements in 10 Groups
- SD glass: One element
- Coatings: Multi-layer
- Angle of view: 29 degrees 50´ to 6 degrees 13´
- Minimum focus distance: 2.5m (8.2ft)
- Reproduction ratio: 1:5.4
- Zooming system: Rotary type
- Number of diaphragm blades: 8
- Filter size: 72mm
- Maximum outer diameter: 77.2mm (3.0in)
- Dimensions: 3.1in (79mm x 136.5mm (5.4in)
- Weight: 1020g (35.9oz)
- Lens Hood: BH-72
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