Vivitar 3500 flash with DM/N2 module on Pentax K1000

Discussion in 'Film Discussion and Q & A' started by TarterTurtle, Feb 14, 2021.

  1. TarterTurtle

    TarterTurtle TPF Noob!

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    Hi All, I found a Vivitar Zoom Thyristor 3500 in our attic a while back, and I haven’t gotten around to using. The flash has a DM/N2 module which I know is for Nikon, but my dad thought that it might work on my K1000 cause it’s a fully manual camera. And doesn’t have any smarts. So I put the flash on without any film in the camera and it fires but I don’t want to use the flash with film just to find out that it won’t work. So I guess my main question is, is there any way to make this flash work with my camera?
    Thanks for any help
    -Nathan


     
  2. 480sparky

    480sparky Chief Free Electron Relocator Supporting Member

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    The K1000 has no provisions for communications with a speedlight. You can probably use it, but you'll have to do so manually.
     
  3. TarterTurtle

    TarterTurtle TPF Noob!

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    That’s what I thought. But this flash doesn’t have a manual setting. Does that mean it would fire at full power? If it did that wouldn’t I be able to figure out what the light was and set my f stop?
     
  4. 480sparky

    480sparky Chief Free Electron Relocator Supporting Member

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    There's probably info on it on the web that will tell you the Guide Number. Using that, your film ASA/ISO and the distance to your subject you should be able to calculate the aperture.
     
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  5. dxqcanada

    dxqcanada Been spending a lot of time on here!

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    I would guess that there is a switch on the back that is labeled M and probably some coloured circles.
    M would fire the flash at full power ... you would use formula Guide Number / distance = aperture
    The colour circles would let the thyrister control output at a specific aperture.
     
  6. dxqcanada

    dxqcanada Been spending a lot of time on here!

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  7. TarterTurtle

    TarterTurtle TPF Noob!

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    That is correct. So I guess I need to just use m and figure out the guide number as sparky said. I’ll check for that now.
     
  8. TarterTurtle

    TarterTurtle TPF Noob!

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    I saw your link and I think I got it. Thanks a lot! I’ll try testing a couple shots with film now. When I get around to developing it (probably in a month or so) I’ll show the results.
     
  9. dxqcanada

    dxqcanada Been spending a lot of time on here!

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    ... and do not set your shutter speed higher than 60x ... that is the max flash sync speed of the K1000.
     
  10. TarterTurtle

    TarterTurtle TPF Noob!

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    Yeah I know. But now that I’m thinking about it would the exposure differ between say 60 and 30
     
  11. dxqcanada

    dxqcanada Been spending a lot of time on here!

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  12. TarterTurtle

    TarterTurtle TPF Noob!

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    Ohh I see. One more question, could I use this flash with my newer Nikon d60? Or would it fry the camera.
     

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