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09-21-2010, 05:26 PM   #16
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Big thanks to Riorico and Boriscleto for mentioning the danger of using high trig voltage flashes on a DSLR. I was aware about the problem, checked that list of usable flashes (Photo Strobe Trigger Voltages), measured the trigger voltage of 285 and AF280T. Even though both are listed as "Your Call"
they might be usable because 285 measures a trigger voltage of ~7.98 with a digital multimeter and 280T shows ~7.5. What do you think?

09-21-2010, 06:00 PM   #17
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Keep in mind that the photo strobe triggers voltages page is for EOS cameras. EOS cameras are only safe with flashes that are 6V or lower.

Nikons are rated to 12V and I read somewhere that Pentax says 20V is safe.

I have an early Vivitar 283, voltages up to 600V!

From the 285 info
QuoteQuote:
Alan Latafat Correa checked with Vivitar and they clarified:
The 285HV has a voltage of 12V. The 285 has a voltage of 350V.
I have found this thread to be very helpful when it comes to flashes.

https://www.pentaxforums.com/forums/pentax-camera-field-accessories/104364-no...questions.html

Last edited by boriscleto; 09-21-2010 at 06:08 PM.
09-21-2010, 06:21 PM   #18
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Thanks.
I checked it extensively (during charging, during discharging (no climb up but goes to zero) and during idling).

Details of 285 I have:
Vivitar Zoom Thyristor 285
Made in Japan,
Use Vivitar SB-6 power supply only,
veri power sensor,
power port on the left
serial 5092304
09-21-2010, 09:11 PM   #19
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QuoteOriginally posted by ultraviolet Quote
Here is how, it's altogether from two different auctions, first one is (129.9+29.9)=$159.8 USD, the Opticam 9.9+12=$22 USD total $183 USD. becomes CAD $193 (approx.) + $7 CAD tax and last time i paid $11 CAD Tax for 110USD item (an M 50mm f4 ). Got it, and these are not for resell, just for my LBA. I will update the condition and version once I receive them.
Ah, I see. Do keep us updated. I'm mighty curious to see if that is a Gen 1 Tak 50. I have a good feeling that it is indeed gen 1.

09-22-2010, 02:29 AM   #20
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If that Bauer still works, it's a wonderful little flash. (I had one in the 70s and bought another one about 6 months ago.)

Low guide number, but outputs a nice temperature.
09-23-2010, 09:48 PM   #21
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Too Nosey

QuoteOriginally posted by JeffJS Quote
See what happens when you leave out the small details?

Enjoy your new lenses. The Super Taks are really some nice lenses.


Yah, some people gets too nosey.
09-25-2010, 02:11 PM   #22
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I received the Opticam 35mm f2.8. Nice little lens in mint condition. Here is what it can do in my hand . Little hard to focus. 1. focused area is the right bottom corner. 2. Focused on the Shovel (yes, it's not mine but my daughter's). Right from the camera, no pp, only resized.

Last edited by ultraviolet; 06-26-2011 at 11:01 PM.
09-25-2010, 02:25 PM   #23
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Received the Spotmatic package, all lenses are near mint. 50mm f1.4 is the 2nd generation one. 28mm is in perfect condition, 135mm has hard to find paint wear (hood and filter is in good cond.). Spotmatic film advance does not work, meter worked few times with 1.5 volt battery now no movement at all. Flash is ok but charges only if it is connected to wall plug, guess the internal rechargable battery is dead or weak. Happy, very happy.

09-25-2010, 02:32 PM   #24
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It's probably not worth it to send it to Eric. The repairs would probably cost more than the camera is worth. Not to mention shipping.

Pentax Camera Service
09-25-2010, 04:59 PM   #25
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QuoteOriginally posted by ultraviolet Quote
Flash is ok but charges only if it is connected to wall plug, guess the internal rechargable battery is dead or weak. Happy, very happy.
It needs the battery, even if it's plugged in, and also after it's been charged for a while. It won't discharge properly otherwise. But leave it plugged in for like a full day--you might get lucky.

That's why I asked. These flashes are close to 40 years old, and most don't work any more.
09-25-2010, 05:36 PM   #26
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Thanks Ira. I was just wondering what is that B (battery?) position and the position with a diode symbol. When it is B in position, I can see the AC plug is guarded. So possibly internal battery should kick in at that point (if it is still alive and fully charged). But the diode one, could not think of any thing. Also the A-O switch, no obvious effect on test discharge, might show effect with real shooting. Anyway, I might use it with my ME or just leave it on the shelve, it is really a good looking flash after all.
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