![Sony LA-EB1 E/B4 Mount Adaptor for FS7/FS7II](/wp-content/uploads/2019/03/Screen-Shot-2019-03-26-at-11.45.35-PM-740x416.png)
Sony has announced the LA-EB1 E/B4 Mount Adaptor for FS7/FS7II, which as the name suggests, lets you mount B4 broadcast ENG lenses on your FS7/FS7II cameras.
Key features
- B4 lens can be attached to shoot with deep DoF and high zoom ratio
Image circle is expanded to Φ13.5mm by magnifying the optical system.- 0.6 stops of light loss
- ALAC (Auto Lens Aberration Compensation) decreases chromatic aberration
- Allows FS7/FS7II to be used for news production
- Start /Stop recording using the lens REC button
- Iris and focus information can be displayed on the viewfinder
- Supports one-handed operation via servo zoom
![The Sony LA-EB1 E/B4 Mount Adaptor for FS7/FS7II](https://www.newsshooter.com/wp-content/uploads/2019/04/Image-from-iOS-7-740x493.jpg)
Sony claims that using the LA-EB1 E/B4 Mount Adaptor only results in a
Now, if you use this adapter you can only do so in the 2K center scan mode.
As the LA-EB1 E/B4 Mount Adaptor communicates with the Sony E mount you can get real-time focus and iris information displayed in the viewfinder.
![LA-EB1 E/B4 Mount adapter seen mounted on an FS7 rigged for use on the shoulder.](https://www.newsshooter.com/wp-content/uploads/2019/04/Image-from-iOS-5-740x493.jpg)
We are assuming that because the adapter is communicating with the mount that it will also be able to supply power to a B4 lens which is required for driving the servo mechanism.
This is not the first B4 to E Mount adapter
![Screen Shot 2019 03 26 at 11 56 19 PM](https://www.newsshooter.com/wp-content/uploads/2019/03/Screen-Shot-2019-03-26-at-11.56.19-PM.png)
MTF Services has been making a B4 2/3″ to Sony E-Mount Lens Adapter for years. However, the adapter is only mechanical and it doesn’t supply power to a B4 lens and it doesn’t communicate with the camera.
Thoughts
![lens adaptor shoulder mount](https://www.newsshooter.com/wp-content/uploads/2019/04/lens-adaptor-shoulder-mount-740x555.jpg)
I think the LA-EB1 E/B4 Mount Adaptor for FS7/FS7II is a great idea. With plenty of affordable second-hand B4 lenses available, you could pair this adapter with your FS7/FS7II to create a pretty nice run and gun documentary or news camera package.
Why now?
It’s fairly clear that Sony is trying to push the FS7/FS7II into more broadcast environments. With the announcement today of the LA-EB1 E/B4 Mount Adaptor and the CBK-FS7BK ENG Style Build-up Kit, you can turn your existing camera into a pretty workable ENG solution.
![Sony CBK-FS7BK ENG Style Build-up Kit for FS7/FS7II](https://www.newsshooter.com/wp-content/uploads/2019/03/Screen-Shot-2019-03-26-at-10.49.53-PM.png)
I still feel this is all a bit late by Sony. These products should have been released years ago. A lot of Sony FS7/FS7II owners already have accessories and solutions in place for using their cameras. While I can possibly see the LA-EB1 E/B4 Mount Adaptor being used by some shooters (if it’s a reasonable price), I’m not so sure about the CBK-FS7BK ENG Style Build-up Kit.
Price & Availability
When it’s released in December alongside the CBK-FS7BK ENG Style Build-up Kit, the LA-EB1 E/B4 Mount Adaptor will cost €5,000.