Vivitar 285

vic cross
Posted 29/01/2012 - 10:06 Link
As you may have seen in the for sale thread I'm selling a Vivitar 285. A member wants to buy but has been put off by friends who tell him it may damage his KR? As it worked perfectly on my Z1p and 645 and I have tested it on my K7 could some technically minded person out there advise on the trigger voltage and safety on Pentax cameras.
(1) I'm sure it's OK on Pentax DSLRs BUT
(2) I don't want to sell it to someone and ruin their nice shiny Pentax DSLR.
Born again biker with lots of Pentax bits. Every day I wake up is a good day. I'm so old I don't even buy green bananas.
fritzthedog
Posted 29/01/2012 - 11:41 Link
Hi Vic

Unfortunately there is no black and white answer to the question - the trigger voltages on these vary - even on the newer HV models to some degree.

The only way of knowing for sure is to attach a a digital multi meter to it and check the output. If you do not know anybody who has one - you can buy these for less than £10

Testing it by trying it on a a K7 or any other DSLR is not a good idea - you may get away with it a number of times - and then it may fry the electrics.

Carl
No matter how many lenses I have owned - I have always needed just one more
rosesred
Posted 29/01/2012 - 12:24 Link
Is there a cord or adapter you can use to stop trigger voltages
being to high?
Chrism8
Posted 29/01/2012 - 12:52 Link
The easiest way is to use a set of radio triggers, from China expect to pay around £15, various makes available in the UK from around £35 upwards.
Chris

www.chrismillsphotography.co.uk

" A Hangover is something that occupies the Head you neglected to use the night before".

-------------------------------------------------------------
K1 - Sigma 85mm F1.4, Pentax DFA 150 -450 F4.5 / 5.6, Pentax DFA* 24 - 70 F2.8

Samyang 14mm F2.8, Pentax DFA* 70-200 F2.8, Pentax A 50mm F1.2

K3iii + K3ii + K5iis converted to IR, Sigma 17 - 70 F2.8, Pentax 55 - 300 F4.5 / F5.6 PLM
sterretje
Posted 29/01/2012 - 15:45 Link
rosesred wrote:
Is there a cord or adapter you can use to stop trigger voltages
being to high?
Wein safesync is another option.
Pentax K10D + Vivitar 55/2.8 macro + Super Takumar 55/1.8 + SuperMultiCoated Takumar 85/1.8 + SuperMultiCoated Takumar 135/3.5 + SuperMultiCoated Takumar 200/4 + Super Takumar 300/4
Pentax K100D + DA18-55ALII + DA55-300
Pentax K5 + FA31Ltd + M50/1.7 + DFA100WR + M120/2.8 (+ DA18-55WR at occasion)
johnha
Posted 17/02/2012 - 20:40 Link
As mentioned, you need to measure the voltage. I've two 'identical' looking Vivitar 283s, one puts 12v across the hotshoe contacts, the other 273v (two seven three). Whilst I was happy to put the 12v one on a film camera, I'd think twice about using it on a DSLR (I don't know what the trigger voltage of current Pentax guns is?).

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