Yongnuo Has Developed Their Own VCM Motors

[Canon Rumors]

Chinese lens manufacturer Yongnuo seems to have developed their own proprietary VCM motors for their upcoming Sony E mount lenses. The E-Mount won't be the only mount released this year, it will just be first.

Yongnuo Has Developed Their Own VCM Motors - Canon Rumors

When you purchase through links on our site, we may earn an affiliate commission. Here's how it works. Chinese lens manufacturer Yongnuo seems to have developed their own proprietary VCM motors for their upcoming Sony E mount lenses. The E-Mount won't be the only mount released this year, it...

www.canonrumors.com

 

[Maximilian]

Love to see competition.
Is there any patent on VCM that Canon could claim?

 

[Canon Rumors]

Love to see competition.
I there any patent on VCM that Canon could claim?

I wouldn't think the motor type matters since everyone uses VCM, though they probaby all do them a little bit different. It's probably the physical mount, electronics and algorithms. I'm not 100% sure though.

 

[Stig Nygaard]

OEM lenses will always perform better than third party companies. Canon and others don't give access to their proprietary algorithms to approved lenses from Sigma and Tamron.

Are you sure? I have the impression that Canon cooperation has been pretty close regarding the RF-S lenses from Sigma (and Tamron). From what I hear the AF-performance of the Sigma lenses is also better on RF mount than on other mounts. Also Sigma lenses (and Tamron?) gets firmware updates through the camerabody like Canon's own RF lenses do.

 

[P-visie]

I there any patent on VCM that Canon could claim?

Voice coil motors are not a Canon invention. Nikon uses voice coil motors in it’s telelenses (they call it Silky Swift VCM (SSVCM)). And voice coil motors are used for other applications as well, e.g. medical and automtive.

See: https://www.stanfordmagnets.com/everything-you-need-to-know-about-voice-coil-motor.html

 

[mb66energy]

Voice coil motors are not a Canon invention. Nikon uses voice coil motors in it’s telelenses (they call it Silky Swift VCM (SSVCM)). And voice coil motors are used for other applications as well, e.g. medical and automtive.

See: https://www.stanfordmagnets.com/everything-you-need-to-know-about-voice-coil-motor.html

They are also common in field of audio reproduction ;-)

 

[GirlsAreBeautiful]

medium size 28mm, I beg.

 

[Old Man FL/FD]

They are also common in field of audio reproduction ;-)

Yup. The term “voice coil” originally comes from the electrical wire wound in a coil in a loudspeaker. Audio frequency current flowing through the voice coil, placed around a permanent magnet, causes the loudspeaker paper cone to move in or out as the magnetic field created by the voice coil either adds to or repels the permanent magnet. The moving speaker cone causes air pressure changes we call sound.

 

[Del Paso]

Yup. The term “voice coil” originally comes from the electrical wire wound in a coil in a loudspeaker. Audio frequency current flowing through the voice coil, placed around a permanent magnet, causes the loudspeaker paper cone to move in or out as the magnetic field created by the voice coil either adds to or repels the permanent magnet. The moving speaker cone causes air pressure changes we call sound.

Thanks for a very clear explanation !