Question about Sunpak Auto 555 TTL Flash

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How does a Sunpak Auto 555 Thyristor Flash Unit work? Does it always need the outside battery pack unit?

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Posted on Jan 02, 2017

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SOURCE: How does the Sunpak Auto

When internal cells are fully charged it do not need external ones

http://www.photographyreview.com/mfr/sunpak/flashes/PRD_84012_3121crx.aspx

Posted on Aug 11, 2010

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SOURCE: I'm using a sunpak battery

Check.. Make shure your battery is good ....and check our power supply if is charging also the pin on the connection itself ....

Posted on Sep 29, 2010

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SOURCE: Can i use sunpak auto 30 DX thyristor to nikon d7000?

According to this list the 30DX's trigger voltage is borderline for use with digital cameras. You may be able to use it with no ill effects, or it may fry your camera. It depends on the particular unit.

Posted on May 12, 2012

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1 Answer

I need a operating manual for Sunpak Auto Thyristor G4500DX Flash gun only


I found this for a Sunpak flash which is similar to the G4500dx:

Reading from the "auto555/G4500DX" Manual, you need to:
1. Slide the Film Selector to desired ISO - (that is the same as your camera ISO used - so, make sure you turn Off the Auto ISO feature if your camera has one).
2. Slide the Mode Selector to "A" (Auto position). This will be Auto Thyristor mode on the flash.
3. Slide the Auto F/stop Selecct Know to desired lens openning - ( so use your camera in Aperture priority mode, more in Manual to prevent changes in the camera aperture value during shooting)
Shoot, and be happy with well exposed pictures by the Auto Thyristor features of the Sunpak 555 flash.
The Sunpak 555 works great with Nikon D50, D70 cameras, as you can synchrinize flash practically at all shutter speeds. Excellent for sunny days to get narrow DOF, yet get any ambient light level contribution as desired.
For other cameras, make sure (watch out for) that Aperture Priority mode does not use shutter faster than the camera max X-sync speed - so Manual camera mode could be a better choice for a novice photographer.
In the manual there is also a list of accessories for various brand cameras, How to use Power Ratio in Manual mode, some advice on using wide lenses, how to care of your 555, and Specification section.
Minimal flash duration is 1/450 at full power, so you can safely use Auto Aperture up to 1/500 sec. Flash duration decreases with lower power setting, or lower auto mode need for poser, and the shortest flash duration is 1/17000th sec.

Jan 29, 2016 | Sunpak Cameras

1 Answer

Using a Sunpak 555 with Cybersync transmitters with a canon 40D off camera and getting inconsistent firing


did you find a solution? ive experienced a similiar problem. i think i might need to buy new flashes.

Aug 13, 2012 | Sunpak Auto 555 TTL Flash

1 Answer

Can i use sunpak auto 30 DX thyristor to nikon d7000?


According to this list the 30DX's trigger voltage is borderline for use with digital cameras. You may be able to use it with no ill effects, or it may fry your camera. It depends on the particular unit.

May 12, 2012 | Sunpak Nikon Auto 30dx Thyristor Shoe...

1 Answer

How does the Sunpak Auto 555 Thyristor Flash Unit work concrning a battery? Does it always need the ourside battery pack unit also?


When internal cells are fully charged it do not need external ones

http://www.photographyreview.com/mfr/sunpak/flashes/PRD_84012_3121crx.aspx

Aug 07, 2010 | Sunpak Auto 555 TTL Flash

1 Answer

Sunpack 544 flash


There can be more than one reasons for that.
1. Broken wire at sync terminal.
2. Electronic sync issue:
2.1. Faulty sync thyristor (CR02).
2.2. Faulty trigger transformer
2.3. Any other passive component around the previous two.
3. Broken sync lead to the flash tube.
4. Broken leads to the main terminals of the flash tube.
5. Electronic fault at main thyristor.
5.1.Faulty main thyristor.
6. Faulty flash tube.
7. Other, like crack on the PCB.
Good luck! :)
If you happen to decide to part with your faulty flash, please consider to write me first, I offer it a good home... best regards, Laszlo klaci(at)index(dot)hu

Mar 21, 2008 | Sunpak Auto 544 Flash

3 Answers

Sunpak 522 and 544 always firing full power


Try cleaning that front flash sensor.

Alexander
atdlee@netzero.com

Dec 13, 2007 | Sunpak Auto 544 Flash

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