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General photography questions and answers: Discuss Regarding lens mounts and flashers....I found my dad's old Sunpack Auto Zoom 3000. it's pretty old. and I'm wondering whether it would work on ...
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Old 31-08-2010, 15:24   #1 (permalink)
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Regarding lens mounts and flashers.

I found my dad's old Sunpack Auto Zoom 3000. it's pretty old. and I'm wondering whether it would work on my 500D. hotshoe voltage is the main concern. some people say the EOS series only support up to 6V but some say it's 250V. and apparently this flasher is around 245V. it'd be awesome if I can get this to work. do you guys have any ideas about this?

I also found some minolta and pentax lenses along with the flasher.

SMC Pentax-M 1:1.4 50mm
Minolta MD Rokkor 50mm 1:1.7
Minolta MD W.Rokkor 35mm 1:2.8
Yashikor AUX. Wide Angle 1:4

That 35mm is the best preserved lens. it's in excellent quality. I've seen some MD to EOS converters in ebay. does anyone here have first hand experience on this matter?

what is the Pentax lens mount? is it FD?

I know this kind of sounds a little bit cheap. but that's what I can do for the time being. and it kinda feels sad to throw away these lenses, especially since I only own the KIT lens.
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Old 31-08-2010, 16:00   #2 (permalink)
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Re: Regarding lens mounts and flashers.

You can get adaptors for your lenses to enable them to fit your camera, but they might be expensive and will not give any auto functions - exposure or focus.

I'd be very careful with the flash. most modern cameras work on a trigger voltage of 6v and higher loads could damage the camera.

Safest would be to use either a slave cell to trigger the flash or get a cheap wireless trigger from e-bay. That way the flash will not be in contact with the camera.
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Old 31-08-2010, 16:20   #3 (permalink)
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Re: Regarding lens mounts and flashers.

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Originally Posted by Dabhand16 View Post
You can get adaptors for your lenses to enable them to fit your camera, but they might be expensive and will not give any auto functions - exposure or focus.

I'd be very careful with the flash. most modern cameras work on a trigger voltage of 6v and higher loads could damage the camera.

Safest would be to use either a slave cell to trigger the flash or get a cheap wireless trigger from e-bay. That way the flash will not be in contact with the camera.
well I found a MD to EOS converter in ebay. they are $15-$30 approx. And these lenses are at least 25 years old. so auto focus won't work. and aperture is manual too.

yeah I guess I better start saving for a speedlite.

thank you. I'll see what I can do.
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Old 31-08-2010, 17:28   #4 (permalink)
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Re: Regarding lens mounts and flashers.

I have a Vivitar 285 which I had not used on my current DSLR. While the 285 does seem to have a trigger voltage of 6v there is still a small risk of it damaging my DSLR. I have just bought a wireless flash trigger with two receivers from e-bay (Hong Kong) for 16. This not only isolates my camera from the flash but also makes it easy to use the flash off-camera. I would strongly advise you against using your Sunpak at 245 volts on a DSLR without isolating it.

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Old 31-08-2010, 17:42   #5 (permalink)
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Re: Regarding lens mounts and flashers.

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Originally Posted by Dave Canon View Post
I have a Vivitar 285 which I had not used on my current DSLR. While the 285 does seem to have a trigger voltage of 6v there is still a small risk of it damaging my DSLR. I have just bought a wireless flash trigger with two receivers from e-bay (Hong Kong) for 16. This not only isolates my camera from the flash but also makes it easy to use the flash off-camera. I would strongly advise you against using your Sunpak at 245 volts on a DSLR without isolating it.

Dave
yeah I should consider buying a wireless trigger. I'm not using it until I buy one. thanks.
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