I have acquired an old vivitar 3500 flash and was wondering if i would be able to use it on my Canon rebel t3i? If so, what settings do I use?
Not recommended. Older flashes have the full voltage across the hot shoe contact. If that voltage touches one of the dedicated contacts in the hot shoe it will damage the circuit of the camera. 300+ volts does major damage to 6 volt circuits!
To test the flash, measure the voltage between the hot shoe contact and the metal contact on the side of the hot shoe. If the flash is fully charged and you measure 300 volts then the flash should not be used.
Later flashes put a low voltage circuit with a transistor switch in its place to protect cameras.
SOURCE: flash on a canon rebel 2000 eso
Just push the flash back and it locks ,...... thats flash off
SOURCE: The built-in flash on the Canon Rebel XTI won't flash.
i am having the same problom try this i just found this ... http://www.fixya.com/support/t1021194-flash_not_working
SOURCE: we have a Canon rebel XT EOS the flash pops up no matter what the
Frustrating I am sure. I had the same problem on my first XTi. I cannot remember what the settings were, but I think I was set for portrait and had flash set as the white balance default source. Therefore the camera always popped up the flash assuming that I wanted or needed fill flash.
Change you white balance to sun/shade/tungston etc as is appropriate, choose a faster ISO speed in lower light levels and try using the P or Tv mode and use a shutter speed that generates a middle range aperature for your particular lens.
SOURCE: I have a Canon EOS 630, 35-135 ultrasonic lens and
Different technology between your film camera and the digital era The flash won't synchronize properly with the new digital you will need an EX type flash the 35-135 will work but because the digital has a focal factor of 1.6 compared to your 35-135 it will become a 56-216mm. Keep your EOS 630 as a back up to the digital.
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SOURCE: I recently purchased a Canon
Hey Leo,
Unfortunately the problem you've mentioned is quiet common with your particular model.
Here's what Canon recommends, on its website.
-Turn the power switch to < ON > to turn on the power again.
And, if that doesn't work. Buddy, you'll have to drop by a service center. Hurry up, or you'll run out on the warranty period.
Toodles,
Rebel K
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