petercf

Joined: 10th February 2008

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petercf
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Comment by petercf posted on Possible misprice Jessops Pentax 50-200mm f/4-5.6 DA ED Lens at 27/02/2009 - 00:05

petercf
You could also use the internal flash to trigger an optical slave trigger on the hot shoe between the 283 and the bracket.

Comment by petercf posted on Vivitar 283 & K10D? Easiest usage? at 05/02/2009 - 23:00

petercf
When I spoke with a Pentax staff member at a Photo fair held in Southampton last summer, his words were very clear - do not use anything like a 283 on the camera, always slave it as the voltage on the trigger can damage the electronics. His words, the K10D is good for 12 to 20V and not the high voltages (e.g. 200V) seen on older flashes.

Comment by petercf posted on Old flash and dslr compatability at 05/02/2009 - 22:57

petercf
Well worth getting - has more text and simple explanations on key features. Once learnt then it makes using a K10D much easier and intuitive.

Peter

Comment by petercf posted on Magic Lantern guides at 05/02/2009 - 22:45

petercf
BarMac wrote:
Hi Petercf - yes a Sigma 10-20 which is fine. To answer your implied question I do think its a lens fault and not a camera fault. The problem is quite variable and mechanical rather than electronic in nature.
Umm - is the battery fully charged each and everytime?

Comment by petercf posted on da* 50-135 sticky focusing at 29/01/2009 - 22:13

petercf
Do you have another SDM and does it perform the same?

Comment by petercf posted on da* 50-135 sticky focusing at 29/01/2009 - 21:57

petercf
hi,

What is the link for the Dutch site, have they tested/measured a Vivitar 283? Pentax told me not to put a 283 on my K10D, its too dangerous.

Comment by petercf posted on My inherited Lenses - any experience with the K20d? at 22/01/2009 - 22:47

petercf
haydnw wrote:
Peter,

Check the trigger voltage of your 283 - mine is under 20v and I have used it extensively on my Samsung GX1S without any damage.

As I understand it trigger voltage is dependent on where and when it was manufactured some 283s are over 200v some under 20v.

Did Pentax specify a safe trigger voltage for the K10d?
They mentioned a figure sub 20V, but said that its better to be in single digits. I will find some batteries and stick a digital volt meter across the contacts and see what I get.

Peter

Comment by petercf posted on Flash isolator at 13/01/2009 - 00:21

petercf
That mirrors an interesting discussion I had with Pentax last summer, prior to buying a K10D, re the compatibility of all my equipment and while lens etc were all fine the one thing I was told was,

"do not directly connect my Vivitar 283 to the hot shoe adaptor or any flash connector"

it will destroy the camera.

I have a full 283 kit (use it on my old KM) with grip, bracket, filters etc and would dearly love to use it with my K10D but I am almost resigned to getting an AF540.

Peter

Comment by petercf posted on Flash isolator at 12/01/2009 - 23:48

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