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Optical design
| Format: APS-C (crop)
Type: Zoom lens
Focusing: Auto Focus (AF)
Lens mounts: Canon EF, EF-S, Canon EF, EF-S, Canon EF, EF-S, Canon EF, EF-S, Nikon F (FX, DX), Nikon F (FX, DX), Nikon F (FX, DX), Nikon F (FX, DX)
First year of production: 2006
Optical design: 15 elements in 12 groups (3 aspheric and 2 low-dispersion elements)
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Specifications:
| Focal length | Max. aperture | Min. aperture | Blades | Min. Focus (m.) | Filter Ø (mm.) | Weight (gr/oz) | Length (mm/in) |
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| 16mm - 50mm | f/2.8 | f/22 | 9 | 0.3 | 77 | 610/21,5 | 97/3,8 |
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Additional information:
The Tokina AT-X 165 PRO DX AF 16-50 mm f/ 2.8
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internal focus (the front element does not rotate)
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water repellent coating
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angle of view 31°-82°
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BH-777 hood is completed with the lens.
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diameter 84 mm
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the lens is not moisture or dust resistant
The Tokina AT-X 165 PRO DXAF 16-50 mm f/2.8 is a fast standard zoom for DSRL APS-C cameras and cannot be used on full-frame sensor cameras. It is manufactured for Canon and Nikon. When using on Nikon D40, autofocus function is not available.
The original system of switching between AF and MF modes is operated. Switching is executed by snapping the focus ring forward for AF and back toward the lens mount for manual focusing
When shooting wide open, the quality is rather low, but it gets much better when stopping down to f/ 5.6. There are considerable chromatic aberrations and vignetting, as well as visible coma at 16 mm. The lens can boast a reliable build. It was announced that the lens was discontinued for improvement in order to make it better than analogous Tamron.
Links to online resources:
PDF Files:
Posted by: dv Date of publication: 25.09.2010
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