MTF Services Ltd B4 2/3" to Canon EF Adapter

BH #MTB4CANEF • MFR #MTB4CANEF
MTF Services Ltd
MTF Services Ltd B4 2/3" to Canon EF Adapter
Key Features
  • Adapts B4 lenses to Canon EF
  • Multi Layer Coated Optics
  • Solid Aluminum Construction
  • Chrome Plated Canon EF Mount
The B4 2/3" to Canon EF Adapter from MTF Services Ltd enables the use of ENG style B4 2/3" lenses on cameras with the Canon EF mount. The adapter features multi layer coated optics, solid aluminum construction and a chrome plated EF mount. A lens support bridge for use with industry standard 15mm rod support systems is also included.
In Stock
$1,640.00
$137/mo. suggested payments
with 12 Mos. Promo Financing* 
Protect your Gear
Add a protection plan from $79.99
V. Manuel B., B&H Pro Video Expert

True Know-How

Ask Our Experts

866.264.7509

MTF Services Ltd MTB4CANEF Overview

The B4 2/3" to Canon EF Adapter from MTF Services Ltd enables the use of ENG style B4 2/3" lenses on cameras with the Canon EF mount. The adapter features multi layer coated optics, solid aluminum construction and a chrome plated EF mount. A lens support bridge for use with industry standard 15mm rod support systems is also included.

Note:
In order to avoid vignetting, the B4 2/3" lens will need to have the 2x extender engaged and the camera's image sensor should be Super 35mm or smaller. HD lenses are recommended. Engaging the 2x extender also allows the adapter to optically correct for using your lens on a single sensor.
Adapts B4 2/3" lenses to Canon EF mount cameras
Multi layer coated optics and solid aluminum construction
Includes support bridge for use with 15mm rod support systems
UPC: 635346640773

MTF Services Ltd MTB4CANEF Specs

Adapter
Camera MountCanon EF
Lens MountB4 Mount
Packaging Info
Package Weight1.2 lb
Box Dimensions (LxWxH)7.4 x 4.4 x 3"
See any errors on this page? Let us know

YOUR RECENTLY VIEWED ITEMS

Will this adpater work on the new Red Kmodo which ...

Will this adpater work on the new Red Kmodo which comes with an Will this adapter work with the new Red Komodo which comes with a rf to ef adapter ?
Asked by: Patrick
The RED Komodo is not on the list of compatible pairings.
Answered by: Bruno
Date published: 2021-05-07

i can't gather from your questions and answers so ...

i can't gather from your questions and answers so far: do i need to buy an additional 2x (ef-ef) teleconverter in order to use old SD b4 lenses without too much vignetting? i am confused because the product shown on the pictures already has an adapter with a lense which i assumed was the converter? tldr: my lens doesn't have a 2x extending-mode. and i want to shoot on a fullframe camera like 5d mII. what else do i need?
Asked by: antonia
I am sorry, but the lens most have a 2x extender already built in to it along with being for 2/3". Also the sensor on the camera being used cannot be larger than Super 35mm or APS-C.
Answered by: Joseph
Date published: 2019-04-23

question

In the video you state that you can use the adaptor in 1x and 2x range however on B&H you state that you must have the 2x engaged to avoid vignetting - which is correct or have I misunderstood something?
Asked by: Craig H.
Craig, I have this adapter (no longer use it though) and although you have the ability to toggle between 1x and 2x, 1x has serious vignetting and therefor you must only shoot in 2x.
Answered by: Anonymous
Date published: 2018-10-24

question

What is the multiplication factor of the adapter by itself? I've heard that it's 1.35X, can anyone confirm this?
Asked by: Anonymous
Cheaper to buy the Kenko 1.4x Pro Teleconverter which will do the same job!
Answered by: Lee M.
Date published: 2018-08-28

question

does this adapter correct chromatic aberration from B4 lens ? since B4 lens is design for 3CCD chip
Asked by: John
The MTF Services Ltd B4 2/3 to Canon EF Adapter will optically correct for the different spectral alignments between three chip prism block sensors and single sensors as long as the 2X extender is engaged.
Answered by: Dennis A L.
Date published: 2019-04-23

question

I have an HJ9x5.5 wide lens. How will this adapt to the super 35mm sensor if i decide to get an b4 to EF adapter?
Asked by: Anonymous
I love this adapter, I use my Fujinon super Wide Zoom to the Canon C-300. This extended the life of the lens and gives me so much zoom range. You will have to use the lens in with the extender engaged in order to havethe correct magnification.
Answered by: Stanford C.
Date published: 2018-12-16
  • y_2021, m_6, d_22, h_18CST
  • bvseo_bulk, prod_bvqa, vn_bulk_3.0.17
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_6
  • loc_en_US, sid_854164, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_bhphotovideo

Close

Close

Close