eric_kim Posted April 4, 2006 Share Posted April 4, 2006 What is the sync voltage of Nikon speedlight sb-25 which was manufactured in 1992? I used it with Nikon F4 and am considering to use it with a digital camera. Is it safe to use sb-25 with a digital camera, or do I need to use a flash sync voltage reducer/regulator? What is a good sync voltage reducer/regulator? Is Wein regulator good at B&H? Link to comment Share on other sites More sharing options...
eric friedemann Posted April 4, 2006 Share Posted April 4, 2006 Posting the same question twice is a photo.net no-no. That having been said, the sync voltage of the SB-25 is less than four volts, which is even lower than the sync voltage of Nikon's DX flashes. So, the SB-25 would be safe for use on Nikon DSLRs: http://www.botzilla.com/photo/strobeVolts.html Link to comment Share on other sites More sharing options...
Michael R Freeman Posted April 4, 2006 Share Posted April 4, 2006 ANY Nikon speedlight is safe on ANY Nikon camera - doesn't matter if it is 35mm, APS or digital. But ... the SB-25 is not the BEST option for a digital camera, as it will not work in TTL mode on ANY Nikon DSLR. AUTO and M modes only. But you already have it, so you might as well use it. Link to comment Share on other sites More sharing options...
mawz Posted April 4, 2006 Share Posted April 4, 2006 Actually, there are some Speedlites that are not safe, but they're all single-digit models from the 60's and 70's. Any Speedlight from the SB-16 on should be fine. The SB-25 will work just fine in Auto thyristor mode on a DSLR (this is how I used my SB-24 with various DSLR's) but you'll lose TTL. The only real issue this gives is that the Auto-thyristor sensor doesn't like Sto-Fen Omni-Bounces. Link to comment Share on other sites More sharing options...
joe_margetts5 Posted April 4, 2006 Share Posted April 4, 2006 I often use a pre digital SB-28 on my D70. No problem, follow the instructions and take advantage of the trial and error possibilities of digital. Used maunally, bracket a bit and you can get great results. Link to comment Share on other sites More sharing options...
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