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<blockquote data-quote="kanteen" data-source="post: 30774" data-attributes="member: 6348"><p>Not True. Tokina was started long before Hoya & Kenko joined with "Tokina" Tokina was started by a handful of Nikon engineers that were not happy the direction Nikon was taking so they startred their own company. Pentax later bought Tokina. Not changing anything - however the Pentax "star" lens are the sharpest around.</p><p>Tokina was founded by a group of <a href="http://en.wikipedia.org/wiki/Nikon" target="_blank"><span style="color: #0645ad">Nikon</span></a> engineers who left Nikon to concentrate on the development of high-quality <a href="http://en.wikipedia.org/wiki/Zoom_lens" target="_blank"><span style="color: #0645ad">zoom lenses</span></a>, which were rare at the time. Originally an <a href="http://en.wikipedia.org/wiki/Original_equipment_manufacturer" target="_blank"><span style="color: #0645ad">OEM</span></a> manufacturer only, in the early 1970s they began selling lenses under their own Tokina brand.<a href="http://en.wikipedia.org/wiki/Tokina#cite_note-nikonians-0" target="_blank"><span style="color: #0645ad">[1]</span></a></p><p>In recent years, Tokina has become a partner of <a href="http://en.wikipedia.org/wiki/Pentax" target="_blank"><span style="color: #0645ad">Pentax</span></a>, division of <a href="http://en.wikipedia.org/wiki/Hoya_Corporation" target="_blank"><span style="color: #0645ad">Hoya Corporation</span></a> and jointly developed some lenses. These will be available under the <a href="http://en.wikipedia.org/wiki/Pentax" target="_blank"><span style="color: #0645ad">Pentax</span></a> and <a href="http://en.wikipedia.org/wiki/Schneider_Kreuznach" target="_blank"><span style="color: #0645ad">Schneider Kreuznach</span></a> D-Xenon and D-Xenogon brands in <a href="http://en.wikipedia.org/wiki/Pentax_K_mount" target="_blank"><span style="color: #0645ad">Pentax K mount</span></a> and under the Tokina brand for all other <a href="http://en.wikipedia.org/wiki/Lens_mount" target="_blank"><span style="color: #0645ad">lens mounts</span></a>. However, the research center, design and engineering teams of these two companies are completely independent.</p><p>The co-developed lenses share main optical designs but have different barrel structures and coatings. They also have some other different features. For example, the Tokina AT-X Pro 12-24mm II comes with built-in silent focusing motor, while the Pentax version has screwdrive autofocus. Another example is that Tokina AT-X Pro 16-50mm and 50-135mm have only screw-drive autofocus and no weather-sealing, but Pentax version have both features.</p><p>Another difference is the procedure for switching between manual focus and auto-focus. With Tokina's "One-touch Focus Clutch Mechanism", you move the focus ring forward to enter auto-focus mode, and backward to enter manual-focus mode. With Pentax's "Quick-Shift Focus System", introduced in early 2004 with the DA 16-45mm f/4.0, you just rotate the manual focus ring while staying in auto-focus mode. Sigma and Nikon now have systems similar to Tokina and Pentax, respectively.</p><p>As of March 2009, the six lenses co-developed and released in both Tokina and Pentax versions are the AT-X Pro 12-24mm f/4.0, AT-X Pro 16-50mm f/2.8, AT-X Pro 50-135mm f/2.8, AT-X 10-17mm f/3.5-4.5 fisheye, AT-X Pro 100mm /2.8 macro, and AT-X Pro 35mm f/2.8 macro. The last Tokina lens released before the collaboration was the 28-70mm f/2.8, in 2002. The currently available Tokina own-designed lenses are the 11-16mm f/2.8, 80-400mm f/4.5-5.6, 16.5-135mm f/3.5-5.6 and 28-80mm f/2.8.</p><p>As of February 2010, Tokina started production on its first Sony Alpha-mount lens, the AT-X 116 Pro DX 11–16 mm f/2.8.</p></blockquote><p></p>
[QUOTE="kanteen, post: 30774, member: 6348"] Not True. Tokina was started long before Hoya & Kenko joined with "Tokina" Tokina was started by a handful of Nikon engineers that were not happy the direction Nikon was taking so they startred their own company. Pentax later bought Tokina. Not changing anything - however the Pentax "star" lens are the sharpest around. Tokina was founded by a group of [URL="http://en.wikipedia.org/wiki/Nikon"][COLOR=#0645ad]Nikon[/COLOR][/URL] engineers who left Nikon to concentrate on the development of high-quality [URL="http://en.wikipedia.org/wiki/Zoom_lens"][COLOR=#0645ad]zoom lenses[/COLOR][/URL], which were rare at the time. Originally an [URL="http://en.wikipedia.org/wiki/Original_equipment_manufacturer"][COLOR=#0645ad]OEM[/COLOR][/URL] manufacturer only, in the early 1970s they began selling lenses under their own Tokina brand.[URL="http://en.wikipedia.org/wiki/Tokina#cite_note-nikonians-0"][COLOR=#0645ad][1][/COLOR][/URL] In recent years, Tokina has become a partner of [URL="http://en.wikipedia.org/wiki/Pentax"][COLOR=#0645ad]Pentax[/COLOR][/URL], division of [URL="http://en.wikipedia.org/wiki/Hoya_Corporation"][COLOR=#0645ad]Hoya Corporation[/COLOR][/URL] and jointly developed some lenses. These will be available under the [URL="http://en.wikipedia.org/wiki/Pentax"][COLOR=#0645ad]Pentax[/COLOR][/URL] and [URL="http://en.wikipedia.org/wiki/Schneider_Kreuznach"][COLOR=#0645ad]Schneider Kreuznach[/COLOR][/URL] D-Xenon and D-Xenogon brands in [URL="http://en.wikipedia.org/wiki/Pentax_K_mount"][COLOR=#0645ad]Pentax K mount[/COLOR][/URL] and under the Tokina brand for all other [URL="http://en.wikipedia.org/wiki/Lens_mount"][COLOR=#0645ad]lens mounts[/COLOR][/URL]. However, the research center, design and engineering teams of these two companies are completely independent. The co-developed lenses share main optical designs but have different barrel structures and coatings. They also have some other different features. For example, the Tokina AT-X Pro 12-24mm II comes with built-in silent focusing motor, while the Pentax version has screwdrive autofocus. Another example is that Tokina AT-X Pro 16-50mm and 50-135mm have only screw-drive autofocus and no weather-sealing, but Pentax version have both features. Another difference is the procedure for switching between manual focus and auto-focus. With Tokina's "One-touch Focus Clutch Mechanism", you move the focus ring forward to enter auto-focus mode, and backward to enter manual-focus mode. With Pentax's "Quick-Shift Focus System", introduced in early 2004 with the DA 16-45mm f/4.0, you just rotate the manual focus ring while staying in auto-focus mode. Sigma and Nikon now have systems similar to Tokina and Pentax, respectively. As of March 2009, the six lenses co-developed and released in both Tokina and Pentax versions are the AT-X Pro 12-24mm f/4.0, AT-X Pro 16-50mm f/2.8, AT-X Pro 50-135mm f/2.8, AT-X 10-17mm f/3.5-4.5 fisheye, AT-X Pro 100mm /2.8 macro, and AT-X Pro 35mm f/2.8 macro. The last Tokina lens released before the collaboration was the 28-70mm f/2.8, in 2002. The currently available Tokina own-designed lenses are the 11-16mm f/2.8, 80-400mm f/4.5-5.6, 16.5-135mm f/3.5-5.6 and 28-80mm f/2.8. As of February 2010, Tokina started production on its first Sony Alpha-mount lens, the AT-X 116 Pro DX 11–16 mm f/2.8. [/QUOTE]
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