APS-C sized imageLenses that create APS-C sized image are designed for digital only. They cannot be used on cameras that have image sensor larger than the APS-C format. These lenses are not suitable for film cameras either. No Ultrasonic AFLenses with ultrasonic focusing mechanism tend to be quiter and faster than traditionally focusing lenses. No stepping motor AFLenses with stepping motor focusing mechanism are better for contrast based focusing, and are quiter and faster than traditionally focusing lenses. One or more Low Dispersion lens element is usedLow Dispersion lens elements help to reduce chromatic aberration. Not stabilizedImage stabilization helps to reduce blur caused by hand shake, especially at high focal length or in low light situations. Image stabilization can give 1 to 3 stop advantage over none stabilized lens, based on the reciprocal rule. Metal mountCheaper lenses are usually equipped with plastic mount, while more expensive, professional lenses have metal mount. In general, metal mounts are more durable, and a good thing to have when lenses are changed a lot. When a camera is used mainly with one lens, the material of the lens mount is not that important. Internal FocusingInternally focusing lenses don't change their size while setting focus. The front lens is fixedThe fixed front lens is not rotating during zoom and/or focusing. This allows the photographer to use petal shaped lens hood. Fixed front lenses also make the use of polarization filters a lot easier. No drop-in filter supportDrop-in filters are used in those lenses where either the front lens is too large, or the field of view doesn't permit the use of traditional filters at the front of the lens. Usually bright tele and ultra-wide angle lenses support this filter type. |
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The new Tokina AT-X 535 PRO DX lens is a 50-135 with a fast constant aperture of f/2.8. This lens gives digital photographers the similar to the industry standard 80-210 telephoto zoom lens in 35mm camera terms but is much more compact and lightweight.
The lens features SD glass lens elements to correct for chromatic aberrations and focuses all colors accurately at the film plane, making the AT-X 535 PRO DX an APO lens. The front element has a newly formulated WP or ?EURoeWater Proof" optical coating on the glass. This new coating makes marks such as spots left by water or finger-prints much easier to clean than standard multi-coating. Other features include a built-in tripod collar and One-touch focus clutch mechanism for fast switching between auto focus and manual focus modes. |
Available mount(s) | Canon EF, Nikon F |
Application(s) | Portrait, Sports, Landscape |
Category(s) | Tele zoom |
Multiplier | 1.5× |
Stabilizer | no |
Focal length | 50 - 135 mm (2.7× zoom) |
Lens construction | 18 elements in 14 groups |
Angle of view |
35mm: N/A digital: 31.5-12.3° |
Number of blades | 9 |
Maximum aperture | wide: f/2.8 tele: f/2.8 |
Minimum aperture | wide: f/32 tele: N/A |
Minimum focusing distance | 100 cm |
Magnification | 0.17× |
Filter size | 67 mm |
Size | ∅ 78.2 × 135.2 mm |
Weight | 845 g |
Notes |
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AF speed | N/A |
AF sound | |
Internal focusing | yes |
Internal zoom | N/A |
Fix front lens | yes |
Mount type | metal |
Weather sealed | N/A |
Drop in filter | no |
Ultrasonic AF | no |
Stepping motor AF | no |
APS-C sized circle | yes |
Low dispersion lens element | yes |
Hard case | N/A |
Soft case | N/A |
Lens hood | BH-671 |
Tripod adapter | N/A |