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Tamron Announces 1.4 & 2.0 Teleconverters

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Canon Rumors:
TAMRON ANNOUNCES TWO TELECONVERTERS New models designed exclusively for Tamron lenses TELECONVERTER 1.4x (Model TC-X14) TELECONVERTER 2.0x (Model TC-X20) September 1, 2016, Commack, New York – Tamron, a leading manufacturer of optics for diverse applications, announces the launch of two teleconverter models exclusively[1] for select Tamron lenses. These accessories make it easy to expand the versatility of the new SP 150-600mm F/5-6.3 Di VC USD G2 (Model A022) ultra-telephoto zoom lens. TELECONVERTER 1.4x (Model TC-X14) increases the focal length by a factor of 1.4x, while TELECONVERTER 2.0x (Model TC-X20) doubles the focal length. Delivery of the new teleconverters, each available in Canon and Nikon mounts, will start on September 23 in the Japanese market and soon thereafter in the U.S. market at a price of $419 for the 1.4X and $439 for the 2X. PRODUCT HIGHLIGHTS 1. Increases maximum focal length Although the maximum focal length is increased, the minimum object distance remains nearly the same, so the magnification ratio during close focusing is enhanced. Both teleconverters are carefully designed and constructed to preserve the original superior image quality of the lens. The 2.0x model uses one LD (Low Dispersion) lens element to suppress aberrations. BBAR (Broad-Band Anti-Reflection) coatings are deployed on both models to help minimize ghosting and flare. 2. Autofocus and VC features are retained with compatible lenses Autofocus functions normally with compatible lenses (please refer to Compatible Tamron Lens List below). VC (Vibration Compensation) performance is maintained. 3. Moisture-Proof and Dust-Resistant Construction The new teleconverters are ideal for use in outdoor photography when matched with any lens that has a Moisture-Resistant Construction because special seals that are dust-resistant and moisture-proof are used at every joint and seam. 4. Sturdy, durable barrel design The barrel frame of the teleconverters are made of die cast aluminum, except for some parts of the exterior finish, to maintain extra strength when used with large lenses. The design utilizes a bayonet mount made of brass on the camera side and stainless steel on the lens side to ensure excellent durability even with repeated mountings and detachments. Design Concept These accessories embody Tamron’s new design that’s born from the pursuit of functional beauty and achieved by smoothly blending engineering and design enhancements. Meticulous craftsmanship is applied to every detail. The new teleconverters feature a metal lens barrel and share this same design concept. Both teleconverters provide remarkable ease of use-even the release lever offers a comfortable touch to the photographer’s finger. SPECIFICATIONS TELECONVERTER 1.4x
* Model : TC-X14
* Magnification : 1.4x
* Optical Construction : 6 elements in 3 groups
* Maximum Diameter : for Canon Ø70mm / for Nikon Ø62.6mm
* Length[1] : for Canon, Nikon 0.8 in
* Entire Length[2] : for Canon 1.3 in (34.1mm) / for Nikon 1.3 in (32.3mm)
* Weight : for Canon 7.2 oz / for Nikon 6.3oz
* Standard Accessories : Mount cap, Rear cap, Lens case
* Compatible Mounts : Canon, Nikon *Use of the TC-X14 tele converter reduces the effective aperture by one f/stop. TELECONVERTER 2x
* Model : TC-X20
* Magnification : 2x
* Optical Construction : 9 elements in 5 groups
* Maximum Diameter : for Canon Ø69.8mm / for Nikon Ø62.3mm
* Length[1] : for Canon, Nikon 2.1 in
* Entire Length[2] : for Canon 2.6 in (66.8mm) / for Nikon 2.6 in (65mm)
* Weight : for Canon 12.7 oz / for Nikon 10.8oz
* Standard Accessories : Mount cap, Rear cap, Lens case
* Compatible Mounts : Canon, Nikon *Use of the TC-X20 tele converter reduces the effective aperture by two f/stops. Specifications, appearance, functionality, etc. are subject to change without prior notice. [1]Length is the distance from the front tip of the lens to the lens mount face. [2]Entire Length is the distance between the tip of the lens and the tip of protrusion.

candc:
Up till now tamron teleconverters were the same as kenko/tokina/promaster. I think they were made by kenko/tokina and rebranded. The old ones like the kenko pro are pretty good optically but not well made in comparison to the canon or new sigma's. These new ones look like a big step up in quality (and price)

LordofTackle:

--- Quote from: Canon Rumors on September 01, 2016, 07:05:20 AM ---Autofocus functions normally with compatible lenses (please refer to Compatible Tamron Lens List below). VC (Vibration Compensation) performance is maintained.</p>

--- End quote ---

And how is that going to work?  :o
At least at the (more interesting) long end the effective aperture will be >8...
Or will Tamron simulate a bigger aperture via the chip?

Mikehit:
I use the 70-200 f4 with 1.4x teleconverter if I don't want to take the 100-400 and would use the 2x as well if I had one (the 70-200 f2.8 with a 2x is quite popular with some wildlife photographers).
Then there is the 300mm f4 with 2x or the 400mm DO IS with 2x.

Perhaps not so  :o

LordofTackle:

--- Quote from: Mikehit on September 01, 2016, 07:56:07 AM ---I use the 70-200 f4 with 1.4x teleconverter if I don't want to take the 100-400 and would use the 2x as well if I had one (the 70-200 f2.8 with a 2x is quite popular with some wildlife photographers).
Then there is the 300mm f4 with 2x or the 400mm DO IS with 2x.

Perhaps not so  :o

--- End quote ---

sorry if my post was misleading. As far as I understand, right now, these extenders work ONLY with the new Tamron 150-600!


--- Quote ---Compatible with two exclusive tele converters

Two exclusive tele converters offering 1.4x and 2.0x magnification have been designed to match the optics of the SP 150-600mm G2, providing a maximum zoom range up to 1200mm.
--- End quote ---
http://www.tamron.eu/lenses/sp-150-600mm-f5-63-di-vc-usd-g2/

f/6.3 @ 600mm +1.4x attached -->f/9
f/6.3 @ 600mm +2x attached -->f/13

So no body, even the high end ones, will AF with the extenders attached (at least not on the long end)

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