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    #11
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    Quote Originally Posted by Run&Gun View Post
    I ran across at least one or two Sony color VF's on eBay around $1500. I thought I saw one around $1300 earlier, but didn't run across it again. Crazy when you look back and realize that these were $8k-$10k-$12k VF's not too long ago. Of course, at one point the F900 was listed at over $100K.
    The Blackmagic Design viewfinder is quite amazing value for its low price, I reckon any manufacture today would struggle indeed to sell $10K+ viewfinders.
    Am a Sound Recordist in New Zealand: http://ironfilm.co.nz/sound/
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    #12
    Senior Member Mike Krumlauf's Avatar
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    Would the blackmagic viewfinder work for the f900? I thought it was made for the ursa
    Mike Krumlauf
    JSAV A/V Technician
    Denver Tech Center

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    #13
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    I'm assuming you've moved past this now, but in the off chance you're still looking to make the thing usable you could do a couple of mods or add a custom intermediate cable connector.

    I can't see the images from the original ebay post, so I'm guessing this optex VF is based off a Sony BVF-10 or 20, and you'll see that the connector pinout below:
    BVF.jpg

    Is different to the HDVS / HDVF-CW30 here:
    C30_2.jpg

    Also the BVF series won't know what to do with a luminance Y signal beyond that of NTSC/PAL (I assume).
    However you've got a perfectly good composite Y signal on the miranda that you can make use of.

    If you could even remotely be bothered (and have the soldering skills), you could either make a custom connector to split off the VF's cable into DC power and Y signal or just cut some holes in the VF casing to either wire straight out of or add your own connectors.
    You'd want to be mindful that there's a CRT inside and that it has hazardous voltage in places.

    Personally I'd probably just stick a BNC connector and a barrel jack or DTAP on the casing, allowing you to run standard-ish and neat cables across camera.
    Then I'd wire up internally to the pins on the multiconnector.

    It looks like you'd need to do something about the voltage that it runs off, which seems to be 9.3v.
    Another user Northdevontv in this dvxuser thread used a stepdown regulator to pull down a standard 14.4 unregulated DC source (such as that from a battery) to what the VF is expecting.
    Hell, the viewfinder might not even need that, who knows...

    It also looks like you'd have to tell the VF to power on by tie-ing one of it's pins to ground, otherwise I think it'll just stay off.
    Attached Images Attached Images
    Last edited by helweg; 01-30-2019 at 06:53 AM. Reason: Clarity


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    #14
    Senior Member Mike Krumlauf's Avatar
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    Yeah im long past this.. just invested in a panavised HDVF-30 and the other VF is sitting in its case in my closet collecting dust as nobody wants to buy it given its SD
    Mike Krumlauf
    JSAV A/V Technician
    Denver Tech Center

    GEAR
    _________________________________
    Sony F23 / SRW1-SRPC1 Recorder
    Canon YJ19x9 SD B4 Lens
    Apple Mac Pro 8 Core 2008 W/ AJA Kona 3 Dual-Link 4:4:4 Capture Card
    Apple Macbook Pro 15-inch 2007
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