You don't have to lose the use of the electronics in your Canon EF mount lenses when mounting them on an AJA CION camera. The MTF EFFECT Canon EF to AJA CION Mount from MTF. Services Ltd., allows you to use an optional MTF EFFECT control unit to control your lens's iris and enables your lens's in-lens stabilization. This is a replacement lens mount that requires you take advantage of your CION camera's removable PL mount. The replacement mount includes the electronic connections necessary to interface your EF mount lenses with an optional MTF EFFECT control unit and provide you with electronic control of your lenses aperture and in-lens stabilization.

The body of the adapter is made from aluminum for its balance between strength and weight, and it is anodized for scratch and corrosion resistance. The nickel-plated brass mounting surface mates with your Canon EF lenses.

For Canon EF Mount Type Lenses    Adapter Includes Electronic Interface    For AJA CION Cameras    Nickel-Plated Brass Canon EF Type Mount

The lens mount adapter connects to an optional MTF EFFECT control unit, which provides electronic aperture control in 1/8 of a stop increments.

Nickel-plated brass mounting surface for wear resistant mounting.

Black anodized interior to minimize reflections.

Related Questions and Answers

Q: 1. Is this the correct adaptor to use with a Panasonic HXP-370 camera to adapt to the Fuji lens broadcast-hd-sd/hdtv lenses 2/-3 eng/x-series/xa20sx85-berm? We would like to purchase both the lens and adaptor but would like to be certain that the adaptor is the correct type.I would greatly appreciate any help you could give me. Thanks. Jelsbet

A: Sorry for the delay. This went through several stops while we were on tour. We bought this adapter to be able to use an older, longer throw lens on a newer hi def camera. It was a canon lens from a Sony camera replacing a fuji lens on a JVC camera. I don't know your cameras or lens but this definitely worked for us.

Q: 2. IT's electronic this mount?

A: No, this version is not electronic.

Q: 3. Will this work with the Sony PMW-F5?

A: Should work:The MTF Services Ltd B4 2/3 to Arri PL Adapter allows the use of B4 lenses on PL mounted cameras.Note: Can only be used on B4 2/3 lenses with built-in 2x extender engaged, HD lenses recommended.

Q: 4. Will this work on my Blackmagic Ursa 4k?What if my lens does not have 2x extender?

A: Hi Ricardo, if your black magic as PL mount you sould be able to mount B4 Lens but need to use extender on it only on 2K.Need to have extender on B4 Lens if not you will have vignette. Cheers.Pascal.

Q: 5. Can I use it with an HD Cine lens that does not have a 2x internal extender, but I add a 2x extender in between the MTF adapter and the lens?

A: In most cases the 2x extender must already be built in to the B4 Lens for it to work. This may not work if you add an extender.

Q: 6. What is the light loss through the adapter?

A: With The MTF Services Ltd B4 2/3" to Sony E-Mount Lens Adapter Package, this item BH #MTB4SEM has the 2x Extender. That is 2 stops of light loss.

Q: 7. Will adaptor fit on red cam and not hit sensor?

A: no this adapter will not work on red cameras

Q: 8. Will this adapter work on F5/55 in center crop mode for 2k without a 2x extender?

A: Yes

Q: 9. Plan to purchase this MTF mount adaptor on my Sony PXW FS5 with the Canon HJ11ex4.7B lens, any advise of how's the quality ? and is there any other cheaper lens mount option in the market ?

A: MTF Services Ltd quality is a world standard and nothing is better made. The quality is commensurate to it's price and it will be the best long term solution for you. This adapter will allow most if not all of the zoom range of B4 2/3 lenses when used on a Sony FS5 in 2k (crop) mode. Note: you will lose 0.8 stop of light. The only other option, the FotodioX Pro Lens Mount Adapter B4 to Sony E Mount, while much cheaper, does not have a lens to expand the image. Thus the B4 lenses only work at the telephoto end with the 2X doubler engaged. Even then, they have unusable wide angle images. This is all due to the fact the B4 lenses are designed for much smaller sensors than what the FS5 has.

Q: 10. What is the weight limit for a lens mounted on this adaptor?

A: HelloWe use it with Canon J 20X, J18X and J 14X lenses for Panasonic Broadcast Cameras in wildlife scenarios and have no problems except that it narrows the angle of view in about 30%. But as we use for ultra close ups of animals, its ok. So far a very good product I should have had before....