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BM URSA Cine EVF not proprietary


Clark Nikolai
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Just watching this video:

After 2m55s the guy from BM is asked if the viewfinder could be used on other manufacturer's cameras and he says that there's nothing preventing that. If another camera could output Display Port information and power through USB-C it would work.

So this is very interesting.

So for this to work on another camera, there might need to be a little converter box that brings in power and converts the HDMI or SDI to Display Port.

What I'm also curious about is if things like focus assist and frame guides are done in the viewfinder or in the camera.

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  • 1 month later...
On 4/28/2024 at 5:15 PM, eatstoomuchjam said:

By the time you add the size and weight of a converter box, you should probably just get the Z Cam EVF or the Portkeys OEYE and save money.

Yeah, probably.

At this point I realize that there's no rush to get an EVF of my own. I have access to a Cineroid EVF I can borrow any time I want (though I don't like how big it is), it does work so I can take my time getting something. 

Ideally I think something like a Zacuto Gratical Eye would be great. I would need an HDMI to SDI convertor. The smallest I've found is an e2work brand one. It seems to not be available anywhere anymore. All the others are bigger physically.

Another one that would probably be fine is a Kinotehnik LCDVFe, but seems to have been discontinued years ago.

I know I'm being picky here but I really don't want it to be too big.

 

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On 4/29/2024 at 2:55 AM, Clark Nikolai said:

After 2m55s the guy from BM is asked if the viewfinder could be used on other manufacturer's cameras and he says that there's nothing preventing that. If another camera could output Display Port information and power through USB-C it would work.

Seems like the BMD EVF works on the Canon C400's USB-C output? Or that is what I've read. 

 

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1 hour ago, IronFilm said:

Seems like the BMD EVF works on the Canon C400's USB-C output? Or that is what I've read.

It would make good sense.  The cost to develop one's own chips/signaling for it would be pretty high* so one might as well use the perfectly good open standard.

* Exception being Red who used open standards unchanged, but found douchey ways like proprietary connectors to still render things generally inoperable

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18 hours ago, IronFilm said:

Seems like the BMD EVF works on the Canon C400's USB-C output? Or that is what I've read. 

 

Interesting, so for me, somebody just needs to make an adaptor to go from HDMI and DC power to this USB-C EVF standard.

One thing I would need though is that things like the focus assist and grid lines be part of the viewfinder and not be something the camera has to produce.

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1 hour ago, Clark Nikolai said:

Interesting, so for me, somebody just needs to make an adaptor to go from HDMI and DC power to this USB-C EVF standard.

Keep in mind that the signal is not HDMI.  It's DisplayPort.  HDMI to DisplayPort adapters exist, but they will add some bulk and probably some processing time.  Similar with SDI.

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  • 2 months later...

So what I ended up doing for my camera rig is get an arm that sticks out in front and holds a small monitor. I have my Desview R6 on it. I've been doing some tests and I think it'll work out fine for what I want to do.

So, I'm no longer looking at EVFs for shoulder rig work.

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