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Tokina AT-X PRO 11-16mm F2.8 DX Lens - Canon AF Mount
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- Fast internal focusing
- One-touch focus clutch mechanism
- Rotary type zooming system
- Waterproof optical coating on the glass for ease of cleaning
- Filter size: 77mm
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|Shipping||£9.41||FREE Shipping||FREE Shipping||FREE Shipping||FREE Shipping||FREE Shipping|
|Sold By||IGLM ELECTRONIC||Amazon.co.uk||Amazon.co.uk||Skyscraper Drones||Amazon.co.uk||Amazon.co.uk|
|Item Dimensions||19.99 x 15.01 x 15.01 cm||2.94 x 2.83 x 2.94 cm||16.76 x 12.95 x 13.46 cm||6.92 x 3.93 x 3.93 cm||8.89 x 8.89 x 9.19 cm||8.8 x 8.7 x 8.7 cm|
|Item Weight||0.56 kg||260 grams||0.55 kg||160 grams||0.56 kg||0.52 kg|
|Max Focal Length||16 mm||18 mm||16 mm||49 mm||20||20 mm|
|Min Focal Length||11 mm||10 mm||11 mm||50 mm||11||10 mm|
|Mounting Type||Canon||Canon EF / EF-S||Canon EF / EF-S||Canon EF / EF-S||Nikon||Nikonbayonet|
Style Name: Canon
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Tokina Lens AT-X116 PRODX (Canon)
The Tokina AT-X 116 PRO DX is an ultra-wide angle lens with a fast f/2.8 aperture for better photography in low-light situations. Many photojournalists consider having an f/2.8 aperture a must for any lens in their camera bag.
- Focal length: 11-16mm
- Maximum aperture: F/2.8
- Minimum aperture: F/22
- Coatings: multi layer
- Angle of view: 104 degrees - 82 degrees
- Minimum focus distance: 0.3m
- Macro ratio: 1:11.6
- Focusing mode: internal
- Zoom mode: rotary zoom
- Number of aperture blades: 9
- Filter size: 77mm
- Width: 84mm
- Height: 89.2mm
- Weight: 560g
- Lens hood included: BH-777
Based on the award-winning optical design of the AT-X 124 PRO DX (12-24mm f/4) lens, the AT-X 116 PRO DX has a slightly shorter zoom range to maintain optical quality at wide apertures.
One Touch Focus Clutch
Tokina's exclusive One-touch Focus Clutch Mechanism allows the photographer to switch between AF and MF simply by snapping the focus ring forward for AF and back toward the camera to focus manually. There is no need to change the AF-MF switch on Nikon cameras and there is no second AF/MF switch on the lens for Canon, everything is accomplished by the focus ring. – Will not AF when used on Nikon D40 SLR camera body.
Tokina Optical Technology
A standard lens is made up of a combination of spherical lens elements. Individual "lenses" within the lens are commonly referred to as "elements". A spherical element has an even curve to the surface of the glass. However, there can be problems with such elements; light entering the center of the lens and light entering at the edge may not be perfectly focused at the same point. This is called spherical aberration. More advanced computer assisted optical designs are creating lenses with more spherical elements. More spherical elements within a lens means a greater risk of spherical aberration having a negative impact on optical quality.
Wide-angle zoom lenses and wide-angle lenses with large apertures are especially at risk for spherical aberration.
To eliminate spherical aberration, Tokina employs aspherical all-glass elements in many of its optical designs to correct this problem. The aspherical shaped surface of the lens element focuses light rays entering both the center and edge of the element correctly at the film plane for an accurately focused image. In addition to correcting spherical aberration, these elements fully correct light quantity and distortion at the edge of the image and provide excellent results when used in combination with a floating element design.
Through a close collaboration with Hoya Corporation, the world's largest optical glass manufacturer, Tokina has succeeded in producing high quality precision molded all glass elements with a greater aspherical shape than any other lens manufacturer. This technique is unparalleled in its technological sophistication and precision.
This lens, the AT-X116 PRO DX encompasses Tokina's new F&R aspherical molded glass elements. These give outstanding performance with very even illumination in the corners and correction of spherical aberration across the image area.
SD Super Low Dispersion
When standard optical glass is used in telephoto lenses, a phenomenon called chromatic aberration can occur. Chromatic aberration is the inherent tendency for glass to disperse (separate) a ray of light into the colors of the rainbow. The rainbow effect created by a glass prism is the most dramatic demonstration of chromatic aberration. In lenses, it is much less pronounced, but still creates slightly out of focus colors, akin to an "optical noise" that has a negative impact on the quality of the picture. To eliminate chromatic aberration, Tokina employs expensive, special glass material having super- low dispersion (SD) properties.
Lenses in the Tokina line-up with the SD mark incorporate these Super-Low Dispersion glass elements, minimizing the secondary spectrum or optical noise caused by chromatic aberration.
Tokina's wide-angle and standard zoom lenses feature a higher quality of optical glass known as Tokina HLD (High-refraction, Low Dispersion) glass. Having higher refractive index and lower dispersion properties, HLD glass is far less likely than standard optical glass to create lateral chromatic aberration, which is often a problem with conventionally designed wide-angle lenses.
Reflections off the surface of lens elements are the enemy to any photographer and to every lens manufacturer. They are reduced or eliminated by bonding multiple layers of a transparent anti-reflection chemical to the surface of the glass. Tokina has developed and perfected a unique coating technique for all of its optics so that they will maintain faithful color reproduction and render clean, sharp images.
Floating Element System
When designing a lens, Tokina calibrated its astigmatism at all points between minimum focus distance and infinity so that it will give the best image results at all settings. However, when there are large differences between the focus limits, effect calibration is not possible. A floating element system incorporates optical elements that move in proportion to the focus setting of the lens. This allows astigmatism to be corrected. Many Tokina lenses employ floating element systems to provide optimum correction of astigmatism from minimum focus distance to infinity.
Internal Focus System
The two most used methods of focusing a lens are either the complete straight forward movement of lens elements (used mainly with single focal length lenses) or the rotation of the entire lens barrel group (used mainly with zoom lenses). The internal focusing system used by Tokina move each element group within the lens, but does not change the overall length of the lens. This is especially useful with telephoto designs.
The internal focusing system has a number of advantages including;
- Faster focusing
- Improved handling due to fewer movements near the center of gravity
- More compact lens designs
- Superior use of filters because the barrel with the filter thread does not rotate.
Focus Clutch Mechanism
Tokina AT-X PRO series lenses all feature the patented "Focus Clutch" Mechanism for switching the lens between auto focus and manual focus modes.
The manual focusing ring can move (be snapped) back and forth between an AF and MF position. When the focusing ring is forward in the AF position, it is not engaged to any of the internal focus gearing and will turn freely. Without the added weight of the metal ring the camera can auto focus the lens more quickly and smoothly.
For manual focus, simply rotate the focus ring all the way to one side or the other on the focus travel, either infinity or it's closest focusing distance, then pull back (towards the mount plate) on the manual focus ring. While pulling back, rotate the ring from one side of the focus travel to the other. When the gears align, the focus ring will snap back into the MF position and the lens can be focused manually.
To return the manual focus ring to auto focus mode, simply snap the ring forward from any point.
Top customer reviews
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Any down-sides? Well possibly:
- the lens does not come with a case. This might bother some people, but cannot say it worries me at all as it just fits into my camera bag when not on the camera.
- Some vignetting apparent. Probably get that with all wide angle lenses, and it is not pronounced enough to worry me.
- Lens flare. Yes I have noticed this on some pictures, but not as bad as some other lenses I have used. It comes with a hood, which helps out in some situations, and overall I do not find it a massive problem.
- The Tokina 77mm lens cap provided does not seem to fit perfectly. Not sure why that is, but I took the advice of another reviewer on here and bought a Nikon lens cap instead, which goes on and off perfectly.
- There is no internal focus motor, so you cannot use this with an entry level Nikon DSLR like the D3100, D3200 or D5100. Works perfectly with the D7000 and D300s.
- A couple of time when changing the lens, the autofocus did not want to work. I took the lens off again and cleaned the end thoroughly before replacing it on the camera. That seemed to sort it out.
None these points would prevent me buying another one of these if mine needed replacing. I would thoroughly recommend this to anyone with a DX camera and an internal focus motor.
It's fantastic for 'cramming it all in' sweeping landscape type shots, but even better for getting right in to the action - you just need to be careful to take your eyes away from the viewfinder regularly or else you end up bumping into things as it feels like you're 10 feet away when you're right next to it. I've stood a few feet from the bottom of a skyscraper and managed to get the entire height in the frame. To top it off, because of the number of pieces of glass in the lens you get some sweet lens flare in very bright conditions, which I think it just adds to the photo.
I love this lens, and it's rarely been off my camera in And although it's a stretch to justify for a DX camera, it's worth every penny.
PHOTOS: Osaka at night; thousands of electronic components at a stand in Akihabara; almost all of the 85,000 capacity Santiago Bernabéu Stadium in Madrid; and a Shisa stone lion-dog in Tokyo from minimum focal length. All on taken on a D90 with cropped frame.
The lens I've found excellent. It feels strong, has a good maximum aperture (at f2.8), works perfectly with my camera (Canon EOS). and the autofocus works perfectly. The zoom range is limited, of which the benefits are the optical quality and wide aperture. Optical distortion wide open is unavoidable, and even "part of the charm" - at least you can see exacctly what you're going to get.
All considered I might still have chosen the Canon equivalent if the price had been the same, but I've no regrets at all about buying this - strongly recommended.
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