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01-10-2008, 01:49 AM   #1
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Still looking for flash - TUMAX?

Does anybody know this flash unit?
TUMAX DPT386AFZ

It is avaliable for Pentax (P-TTL), and is really not very expensive.... about 190 US$.

01-10-2008, 09:15 AM   #2
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looks like a Sunpack or something close. Dose it do P-TTL that's the question.
01-10-2008, 10:47 AM   #3
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Hmmmm, they say it does. here...
01-10-2008, 10:50 AM   #4
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There is another question. Operating manual says: Flash duration: 1/1000 - 1/20000 s.
I don't understand this. As far as I know K100D works only at max of 1/180s. At least with built in flash. Can somebody explain this to me? Does it work faster with external dedicated flash?

01-11-2008, 07:02 PM   #5
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Except for high speed sync the maximum shutter speed of the K10D is 1/180 second when using either the built in or a hot shoe flash. According to the manufacturer of the Tumax, this particular hotshoe flash produces its light in 1/1000 to 1/20000 of a second depending on its power setting, so there is plenty of time for the flash to produce maximum output during this 1/180 of a second. The flash is synchronized to go off while the shutter of the camera is fully open. At speeds faster than 1/180s the shutter has already started to close when the flash fires, and you wind up with a dark line across the bottom of your picture. Lest you think that 1/180s would not be fast enough to stop action, remember that under light conditions where you'd be using the flash, the exposure would be based more on the flash speed (and the aperture) than it would be on the camera's shutter speed. After glancing briefly at the Tumax spec sheet I found myself wondering why you were considering this flash instead of the Pentax AF360FGZ which is available at Buydig.com for $170, and seems to have everything listed for the Tumax for $20 less.

CN
01-12-2008, 12:20 PM   #6
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Looks like a re-badge of the Digital Concepts flash I bought earlier that turned out NOT to be P-TTL.

EDIT-Just downloaded the instructions from the TUMAX web site. It's exactly like the one that came with the Digital Concepts flash, except for TUMAX being pasted on instead of Digital Concepts.
01-12-2008, 04:23 PM   #7
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Yep, looks identical to the digital concepts flash. The digital concepts flash is less than $110 on ebay and the one I have works fine as a p-ttl.

Pro: It swivels, bounces, front and rear curtain and slave flash.

Cons:

It is not as powerful as the sigma ef-500/530 or the pentax af 360/540 flashes. It does sometimes get fulled and underexposes.

The af assist light beam hits too high, so it's useless for close photography.
01-15-2008, 01:20 AM   #8
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QuoteOriginally posted by Clem Nichols Quote
.... After glancing briefly at the Tumax spec sheet I found myself wondering why you were considering this flash instead of the Pentax AF360FGZ which is available at Buydig.com for $170, and seems to have everything listed for the Tumax for $20 less.
CN
Sorry, but if you didn't notice, I'm not from USA. In Europe, the 360FGZ is for 300$ and above....

But thanks for your oppinion. I appreciate it!

01-15-2008, 03:52 AM   #9
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QuoteOriginally posted by pentagor Quote
Hmmmm, they say it does. here...
They wouldn't be the first sellers who claimed P-TTL when it was not P-TTL.
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