FotodioX Pro Lens Mount Adapter B4 to Sony E Mount

FotodioX Pro Lens Mount Adapter B4 to Sony E Mount

FotodioX Pro Lens Mount Adapter B4 to Sony E Mount

B&H # FOPNEXAB423 MFR # B4-SNYE-PRO
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Product Highlights

  • Adapts Lenses with B4 Mount
  • Mounts on Sony E Mount
  • Maintains Infinity Focus on Lens
  • Brass & Stainless Steel Construction
  • For Lenses with Manual Iris and Focus
  • Allows TTL Metering
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  • 1Description

The Fotodiox Pro Lens Mount Adapter B4 to Sony E Mount allows you to use available lenses that feature a B4 mount to fit on a camera body with a Sony E mount. The B4 mount is traditionally used on lenses designed to work with 2/3" 3-imager sensors. This is a lens mount adapter designed to attach to the lens itself, it is not meant to permanently adapt the mount of the camera. The adapter mounts to the lens and is removable, so you can use one adapter on many different lenses.

The adapter ensures the correct flange focal distance, so your infinity focus is maintained. Featuring Brass construction with a stainless steel finish, this adapter is a strong, durable unit. There is no electronic control of the lens through the adapter, so you need to use a lens that has manual focus and iris capabilities. However, the adapter allows TTL (Through-The-Lens) metering, and when using a lens with the adapter, the camera body should be set to either manual exposure or aperture priority mode.

Maintains correct flange depth between lens and image plane.
Infinity remains unchanged, so the lens does not need to be re-collimated or shimmed.
Brass construction protects lens mount, stainless steel finish makes the adapter corrosion and wear resistant.
Compatible with all Sony Alpha NEX E-mount Camera Bodies, Including:
NEX-3, NEX-5, NEX-C3, NEX-5N, NEX-7, NEX-F3, NEX-5R, ,NEX-6
NEX-VG10, NEX-VG20, NEX-VG30, NEX-VG900, NEX-FS100, NEX-FS700, NEX-EA50
UPC: 847372022632
In the Box
FotodioX Pro Lens Mount Adapter B4 to Sony E Mount
  • Limited 2-Year Warranty
  • Table of Contents
    • 1Description
    Adapter Type B4 to Sony E mount
    Focus Infinity is maintained
    Electronic Iris No
    Material Brass with stainless steel finish
    Packaging Infoeufsyqxyrwbwqbbsafqvwxrwvbfyvyzuy
    Package Weight 0.25 lb
    Box Dimensions (LxWxH) 3.3 x 3.0 x 1.7"
    Pro Lens Mount Adapter B4 to Sony E Mount is rated 3.0 out of 5 by 11.
    Rated 1 out of 5 by from DOES NOT DO THE JOB (but nicely built) Fotodiox produces some nice functional lens adapters, I have some of them to attach Nikon lenses to my cinema cameras. I have Fotodiox B4 to micro 4/3 which is a pure marvel. I trusted Fotodiox when they claimed to have a B4 to e mount lens or zoom adapter. This B4 to e-mount adapter is a nightmare. I could never fill the full frame sensor of the Sony A 7S or my Sony FXW-FS5 camera. It only provides a round image not covering the surface of the sensor. I engage the 2X expander of my B4 Canon ENG 8X120mm professional zoom, and even if I add the crop function it does only cover the surface of the sensor from the 1OOmm to 120 mm end of the zoom course. From the wide angle to that focal length it is heavily vigneting.
    Date published: 2016-05-20
    Rated 3 out of 5 by from Fs7 to b4 mount lenses I bought this adapter banking that it would allow me to put my Canon HD 8.2 - 164mm zoom ENG lens on my Fs7. I downloaded the 3.0 software and mounted the lens. Went to base settings on the camera and turned on the 2K center mode. I discovered that the lens vignettes up to 45mm then it's ok. I read on line that if you have a 2X adapter on your lens you should use it to get the full lens mm range. My disappointment is with Sony. They announce the new software upgrade and that you can now mount b4 2/3 lenses to the camera but they didn't do the research regarding recommended mounts and also designing the software so you do not need to use the 2x extender. Why would you use an extender if your looking for HD optics? Sony needs to do better at customer service. I did contact Sony Tech Support and the tech said he would get back to me in my questions on why this has to be this way. Didn't anyone do the R&D on this before offering the software upgrade?
    Date published: 2016-05-06
    Rated 2 out of 5 by from Works, but limited As I have around 5 x B4 lenses, I was eager to connect them to my 4 x FS700 cameras. Sadly, this device does not allow for the full zoom range of the lenses, and obviously needs extra optics within the adapter which means another manufacturer and does send the price sky high. I was after an adapter that would give me the full zoom range of these lenses, but although it said it would create some vignette issues, it only filled the full frame of the sensor at full zoom. At full wide, it was just a small square in the middle of the screen. So...it works with a B4 lens that has a 2 x Doubler on it, but only at full zoom, so it was of no use to me, and I returned it to BH for a credit, along with the power pack to control the zoom motors. Pity....I was really hoping it would have worked the way I wanted.
    Date published: 2015-12-03
    Rated 1 out of 5 by from nicely constructed but does not do the job DOES NOT WORK with Canon ENG zoom B4. I have some other adapters from Fotodiox from Nikon to E mount and from B4 to Micro 4/3, the are all nicely buit, precisely engineered and fit well my lenses and zoom. BUT THIS ONE is OF NO USE. I have an ENG Canon zomm with 2X expander and even with this expander, the image on the full frame sensor is awfully vigneting,the image is round and will only cover the sensor at the end of the zoom course 8X112mm from 100 to 112mm which is useless. if your try to crop, no good results. I return the item to B&H.
    Date published: 2016-05-16
    Rated 5 out of 5 by from Great way to use old glass! Does exactly what it says it will do - converts older B4 ENG-style lenses for use on Sony E-mount cameras. I've got a couple of old lenses that have been collecting dust - this gives me the option of pulling them out and using them again. You'll need a lens with a 2x extender to make up for the difference in imager size. But, these lenses still have some life left in them!
    Date published: 2015-01-14
    Rated 5 out of 5 by from Good Quality - Precision Fit - Wow! Sony PXW-FS5 E Mount to B4 Adapter, on the menu switch mode to Center Scan. Now the Fujitsu, Canon and other B4 2/3 lens are your new par focal 500mm (+/-) F1.7 power zoom. Works great on this FS5 Super 35 and Clear Image Zoom is supported also! Great for stage events and long shot closeups. Do recommend adding lens support. Enjoy!
    Date published: 2016-09-09
    Rated 3 out of 5 by from works. Use lens support This works. I would use good support for the lens because it is not super strong.
    Date published: 2016-04-21
    Rated 5 out of 5 by from 2/3 Adapter It does what it says but it will not work for the set up I intended it for. I wanted to adapt a Fuji 14x4.5 lens to use on an FS7 camera. The adapter lens do work but it needs to have the 2x doubler on and vignettes until 20mm mark. For long telephoto work it would be useful but for wide angle reailty stuff it will not.
    Date published: 2015-04-30
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