R Adaptor with variable ND Filter

#1
Sorry if I've missed it in the deluge of info, but has anyone seen further details about the EOS R to EF adaptor with the variable ND filter. I can see it for pre-order on a few sites but details are sketchy. For instance, what range of stops does the variable ND offer? Will third parties be able to make filters for it?
I shoot with a 5DSR at the moment and I'm no rush to move to mirrorless but I think this is a genius idea. ND filters that could be used with the 11-24 without having to carry a massive adaptor and dinner plate sized filters would be superb.
 

Attachments

#3
Aug 23, 2013
1,406
62
#4
It is sad that they do not even tell you this on Canon USA's website.

From Canon Japan:
Variable bundled the ND filter, ND3 ~ equivalent of the density adjustment ND500 in the adjustment dial ※ is possible.

So ND500 is this 9 stops?
 
Aug 23, 2013
1,406
62
#7
Canon Japan also shows the Polarizer and Clear as an accessory to this.
So hopefully they will offer these slide ins by themselves.

I bought the circ pol for the 500mm Version I from Canon and I always thought it was crap.
I really hope we see great 3rd party options eventually.