R5 Mark II using both AF motors in RF 600mm f4

[Shmukko]

Hello everyone,
so far only the R3 (and now the R1) could use both AF motors of the RF 600mm f4. The reason for this is that the batteries of the smaller series are too weak.
What is the situation with the R5 Mark II? There are new LP-E6P batteries, which can also supply more power.
Does anyone know anything about this?

[shadowsports]

Greetings ,

I'm not aware of any modern Canon bodies that use a smaller capacity/size battery that is unable to power a lens with dual focus motors.  Using the R8 as an example, it has the ability to power both focus motors in a dual motor lens.  For everyone's benefit, can you please post an example where this applies?

The RF600 f4 manual makes no mention of this either.

rf400f28-600f4lisusm-im-eng.pdf (c-wss.com)

Nor does the RF 200-800

rf200-800-f639isusm-im-eng.pdf (c-wss.com)

[Shmukko]

It's called Dual Power AF:
https://www.canon-europe.com/pro/stories/vladimir-rys-super-telephoto-lenses/

[shadowsports · Accepted solution]

Fun facts, some of which remain unverified.  

The LP-E19 is 10.8v, I saw a rumor the LP-E6P was going to have higher voltage, but I'm not sure about that.  Higher mah seems more likely.  (I haven't seen the specs officially published yet).  

The RF mount has 12 pins.  If a RF lens has dual motors both are driven regardless of the body or battery size.  Dual Power AF refers to the communication speed, not the number of motors that are driven at the same time.  The article states that a larger battery makes (both) motors perform faster.  So to clarify, a body that uses a smaller battery does drive both motors, but not with the same communication performance of a body that uses a larger (more powerful battery).  Hope that clarifies things. 😃

**Corrected voltage for LP-E19

[Shmukko]

Thanks for the clarification! Does this mean that the R5 Mark II uses the motors at full performance?

[Shmukko]

Ah and isnt't the LP-E19 at 11,1V?

[shadowsports]

When I search I see three different voltages listed.  I'll get something definitive in a moment

Images I saw showed 10.8 volts 2700 milliamps. That's what I get for trusting Google results LoL 

Watson makes a 3500 milliamp version.  

[wq9nsc]

LP-E19 is nominally 10.8V as marked, this one just came out of the charger and is about to go back into my 1DX III and shows 11.1V no load on my HP lab DMM.

Rodger

[kvbarkley]

The typical answer when asked about a battery's no load voltage is "yes". It can have quite a range.

[cbusa783]

Has anyone had a chance to test whether the R5 II has the capability to take advantage of the faster focus (Dual Power AF) available on the RF 400 & 600 lenses? Or thoughts on how to test? I realize there were a number of posts about the battery but the posters seemed to be unaware of the function available in those two lenses when mounted on an R3 body. 

Possibly the lens senses if there is sufficient power available from the camera body to enable the dual power feature.

Thoughts?

Thank You