Shutter willnot fire in DSLR Focus or Maxim

[RobertM]

My cable has all three wires connected, the braid goes to the earthing post and each of the other two go to the center connectors.

[Fay]

I would have thought that the blue is too short to have fitted where the red is. Where is your blue connected Robert?

[RobertM]

On mine the third wire is clear plastic but has the same function.

[Ian]

has it ever worked? The blue wire is very short and the crimp's not been crimped. I would think a discussion with the supplier's quality control is it order looking at that...

[Fay]

well camera has always been intermittent, but worked fine for the last few months, I have always blamed the program. I gor the cables from Asreonomiser & have mailed him to ask where it should go. So the camera can work without it being connected , I assume, as it has.

It does not look as though it has been used, I agree

[mickw]

Fay did you say somewhere that the camera focussed but the shutter didn't operate, and was this in the "manual and bulb" mode ?

If this is what happened then it's possible the plug wasn't pushed in enough.
The tip of the plug and the sleeve of the plug are the connections for shutter release.  The ring of the plug and the sleeve are the connections for focussing (These are only used with the Canon cable release not any of the LX adapters).
If the plug wasn't pushed in far enough, the tip of the plug may have lined up with the focussing connection in the camera.

And I agree that the blue wire does not look like it was in use.

[MarkS]

In that plug there is a ground wire , a wire to control the focus and one to control the shutter (which I guess is the blue one).

It looks like the blue wire has taken the whole mechanical strain (because of bad assembly)and has eventually broken.  It would explain intermittent problems in the past.

If you have some kind of continuity tester you can check if the "unused" solder blob is the one that connects to the tip of the plug.

Mark

[Mac]

Fay cant make today,
do you want me to bring my soldering iron.

The canon system needs both ring and tip connected, one is the focus, one is the shutter.



Mac

[mickw]

Mac you will only need "focus" if attaching a lens and using autofocus.
Or does DSLR Focus/Maxim focus a camera lens ?

[Mac]

Mac you will only need "focus" if attaching a lens and using autofocus.
Or does DSLR Focus/Maxim focus a camera lens ?

dslr wont really focus the lens as the focus and shutter are operated at the same time,
so the autofocus wont react that quick, if you build a cable with a time delay between the focus and shutter, it will focus and then take the photo.

but.

if you are using the camera with a lens in manual focus or with a telescope attached.(same difference)

The camera is still looking for the focus input, true, its not going to focus, but if it dosent see the input
it wont fire the shutter.

Mac.

[mickw]

The camera is still looking for the focus input, true, its not going to focus, but if it dosent see the input
it wont fire the shutter.

Er, the one I made does  

http://www.beskeen.com/projects/dslr_serial/dslr_serial.shtml

Halfway down the page - DSLR Focus drawing

*But I don't control my focus from the capture program, I do it manually*

[The Thing]

I used a mono plug I had lying around, the ring and tip are one, so focus and fire instructions are the same thing using my cable. Works fine.

[Mac]

That's really weird.

On my one (Canon 350D), it wont fire if the focus input is missing.

strange.

Mac.

[Fay]

I have done a lot of testing. It was not firing & then suddenly was fiting 8/10 times.

Focusing is done with the scope, by the way.


It did a couple of weird things, suddenly the laptop just went off, everything just went off.

In DSLR Focus, it went from focus to capture without any instructions.

I don't like erratic, makes me edgy when outside.

I am sure the blue wire has never been attached. No answer from Astronomiser yet.   

[mickw]

It did a couple of weird things, suddenly the laptop just went off, everything just went off.

You've seen Poltergeist ?     


And you still go down the garden in the dark