Tamron SP 1.4X Pro Teleconverter

Tamron SP 1.4X Pro Teleconverter

Lens Summary

Brand: Tamron

Also Known As: Tamron 1.4X Teleconverter

Lens Type: Teleconverter

Format: Full Frame / FX

Focus: Autofocus

Lens Mount: Canon EF, Nikon F

Release Date: N/A

MSRP Price: $224

Made in: Japan

Production Status: In Production

Lens Description: Simply fit a Tamron teleconverter between the lens and the camera body to increase a lens focal length, giving you extended telephoto capabilities so you can take photos with greater magnification from the same camera position. Tamron\'s AF teleconverters are compatible with most AF (autofocus) and autoexposure cameras.

Tamron SP 1.4X Pro Teleconverter Specifications

Lens Specifications
Lens TypeTeleconverter
Focal Length1.4x
Mount TypeCanon EF, Nikon F
FormatFull Frame / FX
Maximum Reproduction Ratio1.4x
Optical Information
Lens Elements5
Lens Groups4
Physical Characteristics
Weather / Dust SealingYes
Mount MaterialMetal
Dimensions19 x 68mm
Other Information
Available in ColorsBlack

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Kathy Popelka

I have a Nikon 7100 with the Tamron 150-600 and my current extender AF 1.4 only hunts, I would like to buy the SP1.4 extender if it will autofocus. Does anyone know if it will work?


I have the Tamron 150-600 too and use it coupled with a Nikon D750. I am so anxious to get a teleconverter that will work with this combination. Please let me know if something new comes out that will or will not work with autofocus!

I love the Tamron lens, but have need to reach out and touch more!


Does anybody know if this will work with the new Tamron 150-600mm lens? The website has very little info, I use a Canon 6D and 600D. Thanks in advance if anybody can help!

Greg Anderson

It does. I have the combination you describe. Images are acceptably sharp. Not so much with the 2x, however. Warning, I discovered that neither the 1.4 nor the 2x work with the 5d Mkiii and either the 150-600 or the 28-300 (these are new style lenses with the silver band). All combinations produce a camera error message. I emailed Tamron. They tested and confirmed that there is a problem (also a I found a couple complaints on the web). They stated that they do not guarantee what will work with what. They said that the design is old and that Japan is unlikely to do anything about it. Canon’s response was “Not our stuff, not our problem.” It’s a bit weird because both teleconverters work with all my other Canon bodies and both Canon L lenses and older (gold band) Tamron lenses. I also discovered the same problem with Kenko teleconverters. Moral of the story: Make sure you thoroughly test any teleconverter you buy, and just be aware that it may not work with future acquisitions. Apparently there are NO guarantees here.


I agree. I get the error message after every 10-11 shots and I have to restart my 5dMark iii camera after getting the message. It’s annoying but it atleast goes away for the next 10 shots.