Re: Flash trigger voltage & Pentax cameras

2002-08-28 Thread Frantisek Vlcek


Wednesday, August 28, 2002, 3:20:14 AM, Ken wrote:
KA> My Sunpak flashes are < 7 volts so that should not be a problem.  I am 
KA> not sure about TTL, but IIRC it doesn't.

KA> On Tuesday 27 August 2002 07:41 pm, Mishka wrote:
>> Anyone knows if Sunpak 522 can fry LX? I don't have a voltmeter and

Hi Mishka,
   in the most recent Sunpak catalogue, there is no mention of the
   522, (it's a handlemount isn't it), there is only 622/622Super
   (which is the biggerst one with interchangeable flash heads), 555
   (which does ttl), and 544 (no ttl). I had the european version of
   555 (G4500DX) and it had TTL and low voltage enough (under 6 volts
   IIRC), so your 522 could be safe. You can see for yourself it its
   TTL or not - all TTL handlemounts have a two-row 8-pin (? iirc)
   connector most probably on the underside of the flash head. To this
   you connect the ttl cable which is connected to a ttl module on the
   camera. The cable is Ext-11 for the handlemounts.

Good light,
   Frantisek Vlcek




Re: Flash trigger voltage & Pentax cameras

2002-08-27 Thread Ken Archer

My Sunpak flashes are < 7 volts so that should not be a problem.  I am 
not sure about TTL, but IIRC it doesn't.

On Tuesday 27 August 2002 07:41 pm, Mishka wrote:
> Anyone knows if Sunpak 522 can fry LX? I don't have a voltmeter and
> not willing to experiment...
> And if those two can work together peacefully, does it do TTL with
> LX?
>
> Best,
> Mishka
-- 
Kenneth Archer, San Antonio, Texas
[EMAIL PROTECTED]




Re: Flash trigger voltage & Pentax cameras

2002-08-27 Thread Mishka

Anyone knows if Sunpak 522 can fry LX? I don't have a voltmeter and not
willing to experiment...
And if those two can work together peacefully, does it do TTL with LX?

Best,
Mishka

- Original Message -
From: "Simon King" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Tuesday, August 27, 2002 8:29 PM
Subject: RE: Flash trigger voltage & Pentax cameras


> > How and with what do you measure
> > [flash voltages].??
>
> Simple, put your tongue on the trigger and shoe spring (you may have to
> suck), charge up the flash and then guess the voltage before you pass out.
> :-)
> OK  - Not really. I just hung a multimeter over the two terminals once the
> flash was charged.
> Simon
>
>
>
>
>
> -Original Message-
> From: Doug Franklin [mailto:[EMAIL PROTECTED]]
> Sent: Tuesday, 27 August 2002 9:20 PM
> To: [EMAIL PROTECTED]
> Subject: Re: Flash trigger voltage & Pentax cameras
>
>
> On Tue, 27 Aug 2002 07:16:26 -0400, David Brooks wrote:
>
> > I cannot answer your question Simon,but have
> > one for you.How and with what do you measure
> > [flash voltages].??
>
> 1) Get a volt meter, or VOM meter (Volts-Ohms-Milliamps).
>
> 2) Put fresh batteries in your flash and turn it on.
>
> 3) Put the black lead of the volt meter on the center contact on the
> bottom of the flash.
>
> 4) Touch the red lead to the other contacts on the flash, one at a
> time.  At least one of them will show a voltage difference.  It could
> range from a couple of volts to well over 200 volts.
>
> This voltage is present on the contacts of the flash when the flash is
> on and energized.  IIRC, the camera dead-shorts these contacts to
> trigger the flash.  I'm not sure how energy is used on the other
> contacts, like TTL, digital, etc.
>
> TTYL, DougF KG4LMZ
>
>




RE: Flash trigger voltage & Pentax cameras

2002-08-27 Thread Simon King

> How and with what do you measure 
> [flash voltages].??

Simple, put your tongue on the trigger and shoe spring (you may have to
suck), charge up the flash and then guess the voltage before you pass out.
:-)
OK  - Not really. I just hung a multimeter over the two terminals once the
flash was charged.
Simon





-Original Message-
From: Doug Franklin [mailto:[EMAIL PROTECTED]] 
Sent: Tuesday, 27 August 2002 9:20 PM
To: [EMAIL PROTECTED]
Subject: Re: Flash trigger voltage & Pentax cameras


On Tue, 27 Aug 2002 07:16:26 -0400, David Brooks wrote:

> I cannot answer your question Simon,but have 
> one for you.How and with what do you measure 
> [flash voltages].??

1) Get a volt meter, or VOM meter (Volts-Ohms-Milliamps).

2) Put fresh batteries in your flash and turn it on.

3) Put the black lead of the volt meter on the center contact on the
bottom of the flash.

4) Touch the red lead to the other contacts on the flash, one at a
time.  At least one of them will show a voltage difference.  It could
range from a couple of volts to well over 200 volts.

This voltage is present on the contacts of the flash when the flash is
on and energized.  IIRC, the camera dead-shorts these contacts to
trigger the flash.  I'm not sure how energy is used on the other
contacts, like TTL, digital, etc.

TTYL, DougF KG4LMZ




Re: Flash trigger voltage & Pentax cameras

2002-08-27 Thread Doug Franklin

On Tue, 27 Aug 2002 07:16:26 -0400, David Brooks wrote:

> I cannot answer your question Simon,but have 
> one for you.How and with what do you measure 
> [flash voltages].??

1) Get a volt meter, or VOM meter (Volts-Ohms-Milliamps).

2) Put fresh batteries in your flash and turn it on.

3) Put the black lead of the volt meter on the center contact on the
bottom of the flash.

4) Touch the red lead to the other contacts on the flash, one at a
time.  At least one of them will show a voltage difference.  It could
range from a couple of volts to well over 200 volts.

This voltage is present on the contacts of the flash when the flash is
on and energized.  IIRC, the camera dead-shorts these contacts to
trigger the flash.  I'm not sure how energy is used on the other
contacts, like TTL, digital, etc.

TTYL, DougF KG4LMZ





Re: Flash trigger voltage & Pentax cameras

2002-08-27 Thread Flavio Minelli

Simon,

FWIW I have an older Achiever flash (don't remember the model), GN is
28/meters and I always used it on my Program A (Program +) without
problems.


This unit must be at least 15 yrs. old. If you're interested I can dig
it out and check the model.

Ciao, Flavio




Re: Flash trigger voltage & Pentax cameras

2002-08-27 Thread David Brooks

I cannot answer your question Simon,but have 
one for you.How and with what do you measure 
these amounts.??

Dave

 Begin Original Message 

From: Simon King <[EMAIL PROTECTED]>
Sent: Tue, 27 Aug 2002 07:53:07 +0800
To: "'[EMAIL PROTECTED]'" 
Subject: Flash trigger voltage & Pentax cameras


Hi All,
On the weekend I bought a flash (Achiever 
821TZ) on impulse as I thought I
could use it as a backup and/or a slave flash.
I thought I'd check the trigger voltage before 
I put it on either of my
cameras (a Program A and a MZ-6/ZX-L)
When I checked it was 270v!
I was amazed! On my other flash it's only about 
4v.
There's no way I'm putting it on my MZ-6, but 
my question is - would the
Program A handle the hight voltage?
I note that the manual states that flash units 
 from other manufacturers "may
damage the electronic systems of your camera"
... At 270v I wouldn't be surprised.
Cheers,
Simon



 End Original Message 




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Flash trigger voltage & Pentax cameras

2002-08-26 Thread Simon King

Hi All,
On the weekend I bought a flash (Achiever 821TZ) on impulse as I thought I
could use it as a backup and/or a slave flash.
I thought I'd check the trigger voltage before I put it on either of my
cameras (a Program A and a MZ-6/ZX-L)
When I checked it was 270v!
I was amazed! On my other flash it's only about 4v.
There's no way I'm putting it on my MZ-6, but my question is - would the
Program A handle the hight voltage?
I note that the manual states that flash units from other manufacturers "may
damage the electronic systems of your camera"
... At 270v I wouldn't be surprised.
Cheers,
Simon