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Forum: Flashes, Lighting, and Studio
12-29-2015, 09:03 AM
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I still like my old Sunpak Auto322 from my days of film work in my Pentax MX. But now that I found high trigger voltage could fry my just bought K20D, I checked the voltage at the hotshoe contacts and got a range of 175 to 179 volts. So now I'll only use the old 322 via the PC port on a flash bracket. But given the advances of wireless tech I'll upgrade to new tech that allows me to remote fire a new flash off the camera if i want.
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Forum: Pentax DSLR Discussion
12-28-2015, 08:51 PM
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I have a Sunpak Auto322 flash from my film days on my Pentax MX, that I have used a few times on my recently bought K20D. Now after some research I learn that my trusty 322 could fry the K20D through the hotshoe. So if I use a flash bracket and the cable from 322 into the PC port on the K20D am I also endangering the K20D?
That or I get voltage protector for the flash so it can't backfeed high voltage into the hotshoe.
---------- Post added 12-28-15 at 10:42 PM ----------
I just checked the voltage output at the hotshoe mount on my Sunpak Auto322, and I get 175v to 179v. At first I thought that would be only when the flash fires, but that value is present whenever the flash is on. So,...no more 322 on my K20D.
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Forum: Welcomes and Introductions
12-28-2015, 08:35 PM
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Hi from Green Bay. After many years of absence from photography other than a Casio pocket camera, and the occasional roll of film in my early 80s vintage Pentax MX, I have gotten my finger on the DSLR shutter of a Pentax K20D. Wow, is this camera cool! And it uses all my old lenses back to my fast 1:1.2 50mm Pentax lense, and gives me image shake reduction too yet! But that means I also slid my Sunpak Auto322 flash onto the hot shoe and found it fired right off.
Now I come to find out the 322 is one of the old flashes with the highest flash voltage into the hotshoe! So I need to find an alternate way to use my 322. I think it is safe (safer) to use the 322 flash cord into the PC port on the K20D, but I need to research that further. Shutter on!!
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