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AndyMan

Tongue Switch Help

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I've got a Conceptus Tongue Switch with a new Rebel G2. The Tongue Switch has the 3-pronged stereo adapter, and the camera is set to Tv - shutter priority.

If I delay 5 seconds between taking shots, the camera will act in a sort of 'bulb' setting, where the shutter stays open until I hit the switch again. If I leave less then 5 seconds between shots, it shoots as normal.

What am I missing?

_Am
__

You put the fun in "funnel" - craichead.

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Currently set at 125.

What I mean, is that the first time I hit the tongue switch it opens the shutter, and keeps it open until I hit the switch again. If I take a second shot right away, it works as normal. If I wait 5 seconds before shooting, it again holds the shutter open until I hit the tongue switch again.

_Am
__

You put the fun in "funnel" - craichead.

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Ok - I'm assuming it only does this with the new switch hooked up? If that's the case my guess would be that the switch is wired incorrectly - I've wired up quite a few different models of cameras but never a digi-rebel unfortunately. Sorry I couldn't be more help.

Z






Action©Sports

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Ok, ok ok..... For shits and giggles - Set it to manual focus and see if does the same thing. The third wire in the plug is for the Auto Focus. I'm not sure about Canon - I use Minolta but, the three prong system works pretty much the same way - When you press the shutter release button, it activates the auto focus system - on the Minolta's at least, there is a setting for Auto-Focus Priority or Release Priority - AF Priority means the the camera will not release the shutter if focus is not acquired - RP means that it will try to focus as best it can but it will release the shutter weather the subject is in focus or not.

If the Auto Focus wire isn't connected to the correct terminal and the camera is set to Auto-Focus Priority, the shutter won't release until it's depressed a second time -






Action©Sports

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Ok, I think my post was wrong.

It's not holding the shutter open. It's not taking a picture, either - if I delay for more than 5 seconds. I hear a 'click', and the shutter curtain moves - but doesn't seem to actually open.

Is there some sort of "priming" action being performec on the shutter curtain?

This is frustrating.

After a 5 second delay....

I hit the tongue switch once. I hear a "click". I doesn't take a picture.
I hit the tongue switch again. I hear the motor drive advance.
I hit the tongue switch a 3rd time. It takes a picture.
I hit the tongue switch a 4th time. It takes a picture.
I wait 5 seconds, back to the top. I hear a "click". I doesn't take a picture.

Is it possible this is related to the fact that I don't have film loaded? >:(

The behaviour only happens with the remote switch, doesn't happen with the main shutter release button.

MF or AF doesn't affect anything. In AF mode, it does focus before taking the picture, but not before this weird thing its doing...

_Am
__

You put the fun in "funnel" - craichead.

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Yep - Yo switch be wired wrong:)
I'm sitting here playing with the remote with my meter and basically, here's how it should work. When you depress the tongue switch all of the 3 terminals short out and activate both the auto-focus and the shutter. We'll call those terminals 1, 2, and 3. Two of those terminals (1, and 3) activate the shutter and terminals 2 and 3 activate the auto-focus. So, here's how it should be wired so that it only focuses and and activates the shutter when the switch is depressed - Normally Closed between terminals 1 and 2. Normally Open between terminals 2 and 3. Does that make any sense or help you at all?






Action©Sports

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Thanks everyone for the tips.

We narrowed the problem down to the Sigma 24MM lens I was using. The problem went away when we switched lenses. The problem only appeared when using any remote switch - either wired mono or stereo.

This lens was advertised as not working with the ElanII camera. I can testify it also doesn't work with the Rebel G II. I suspect it won't work with any of the newer "II" series bodies.

_Am
__

You put the fun in "funnel" - craichead.

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