Tamron has two new teleconverters that are made to be used with specific telephoto Tamron lenses, including the new Tamron SP 150-600mm F5-6.3 Di VC USD G2. The teleconverters are a 1.4x version and 2x version. Using the 150-600mm as a base example, they turn that lens into a 210-600mm to 300-1200mm.

The 1.4x and 2x will cost $419 and $439, respectively. At the moment, we know that the teleconverters will be out on September 23 in Japan, but it’s not clear, specifically, when they will be available in the U.S.

For more details and technical specifications check out the full press release below.


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.


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.

Compatible Tamron Lens List (As of September, 2016)

SP 150-600mm F/5-6.3 Di VC USD G2 (Model A022)
For Canon and Nikon

Changes in zoom range when used with SP 150-600mm F/5-6.3 Di VC USD G2 (Model A022)

Mounted on 35mm full-frame DSLR camera Mounted on APS-C format DSLR camera
 Without teleconverter  150-600mm  Approx. 233-930mm
 With 1.4x teleconverter  210-840mm  Approx. 326-1302mm
 With 2.0x teleconverter  300-1200mm  Approx. 465-1860mm

Changes in magnification ratio when used with SP 150-600mm F/5-6.3 Di VC USD G2 (Model A022)

Maximum Magnification Ratio
Without teleconverter 1:3.9
With 1.4x teleconverter 1:2.8
With 2.0x teleconverter 1:2

Available focusing mode when used with SP 150-600mm F/5-6.3 Di VC USD G2 (Model A022)

When using viewfinder When using live view mode
 With 1.4x teleconverter AF*1*2/MF  AF*2/MF
 With 2.0x teleconverter MF  AF*2/MF

*1 Autofocus functions normally on any camera that offers F/8 autofocusing (see your camera’s instruction manual for your camera’s ability).
*2 Subjects with low contrast and/or luminosity values can sometimes result in out-of-focus images.

[1]Compatible model is SP 150-600mm F/5-6.3 Di VC USD G2 (Model A022) (As of September 1; Tamron)

Optical Construction:



  • 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.


  • 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.