Pentax Response to Flash Selection for DS...? Hmmm?

Started Dec 20, 2004 | Discussions thread
Joseph Tainter Forum Pro • Posts: 10,015
Re: Pentax Response to Flash Selection for DS...? Hmmm?

FWIW, I bought a Vivitar 6000 AF macro flash to use on my PZ-1p bodies. The first one I tried it on, the camera froze after a few uses. I took it off and the camera came back to life. I put the flash away, figuring it was just a bad investment.

Then, with some trepidation, I tried the same flash on my D. The combination works fine. What's more, even though this flash does only TTL, exposures with it are fine.

When I asked Vivitar about trigger voltage, the reply I got was "less than 6 volts".

Joe

rsjoberg wrote:
I think you'd have to be using some real ancient age stuff to run
into the flash trigger voltage problem. Back in the day cameras
used a physical metal contact switch inside the camera to fire the
flash. They were pretty robust, but could get burnt. A high
switching voltage flash could overcome a dirty switch for a longer
time, but then a technician would have to open up the camera and
clean or replace the contacts. Solid state switches started to
replace these 30 years ago and I doubt any high switching voltage
flashes have been produced for 25 years or more.

Pentax is pretty cool because the analog TTL flashes still work
with the digital TTL cameras. Thus I can use my AF280 in TTL mode
with my istD, but you don't want to go sticking Nikon or Canon TTL
flashes on your IstD or DS, because it could be bad and Pentax has
already warned you against doing it, and so has no warranty
liability. However almost any non-TTL flash should be OK.

RonJohn wrote:

Here's the Pentax response to my question which is at the end of
this posting. I'm still confused about the flash trigger voltage
thing...

Also, I didn't realize there were different 'hot shoes.' I thought
a hot shoe was a hot shoe!

RJ

"Thank you for contacting Pentax Imaging Co.

While we couldn't advise you regarding the compatibility of non
Pentax flashes with Pentax cameras, the problem generally occurs
when someone tries to use a flash designed for one of our
competitor's cameras on one of our cameras. The pin placement on
the hot shoe is generally not the same which causes the short
circuiting of electronics inside.

Older Pentax flashes should work on newer cameras depending on what
model they are. However, you may not have some features available
on newer flashes.

We hope this helps

If you have further questions, please feel free to contact our
Customer Service Department at: 800-877-0155 "

Mark Smith
Pentax Imaging Co.

-- hide signature --

Original Message-----
From: Ronald Johnson [ ron@k7uv.com]
Sent: Thursday, December 16, 2004 9:42 AM
To: pentaxinfo_ PAIC
Subject: Are there restrictions on what flashes can safely ...

Comments:
Are there restrictions on what flashes can safely be used with this
camera? I can't afford the Pentax dedicated flashes and some of
the forums are claiming that some flashes can 'fry' or destroy the
whole camera if the trigger voltages exceed some 'arbitrary'
voltage. Is this true? How about older Pentax TTL flashes; are
they ok to use? There are just 2-3 flashes listed in the DS
manual. Please clarify this because I MUST purchase a flash.
Thanks in advance...Ron Johnson

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