/ Tokina AT-X 840 AF II /
Glass
 A built in tripod collar that
allows the lens to rotate 360x and be locked in any position, has been added to provide much
greater balance and stability while the camera is mounted on a tripod.
Tripod Collar
The AT-X 840 AF-II is constructed with
high quality optical glass multicoated lens elements created by Hoya Corporation, the world's
largest manufacturer of optical glass. The rear element group employs SD (super-low dispersion)
glass to remove chromatic aberrations and maximize resolution and contrast across the film
plane. The AT-X 840-II suppresses flare with two methods; the first is an internal flare
cutting mechanism, independently developed by Tokina, located behind the second element group.
The second is a deep lens hood (BH724) provided with the lens.
To fit Canon EOS, Minolta AF, Pentax and Nikon-D
| 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° 50’ to 6°13’ |
| Minimum focus
distance: |
8.2 ft. (2.5m) |
| Reproduction ratio: |
1:5.4 |
| Zooming system: |
Rotary type |
| Number of diaphragm blades: |
8 |
| Filter size: |
72mm |
| Maximum outer
diameter: |
3.0in. (77.2mm) |
| Overall length: |
5.4 in. (136mm) |
| Weight: |
37.0 oz. (1050g) |
| Accessories, included |
Dedicated lens hood (BH-724), fitted soft case |
© 2001 THK Photo Products,Inc.
www.thkphoto.com
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