Can Pentax high-speed sync be used in manual flash mode?

Asked 4/12/2016

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2 answers

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I’m using a Tumax DPT586 AFZ-P with a Pentax K-50. When I enable high-speed sync, the flash only seems to work in P-TTL/TTL mode and I can’t find a way to set manual flash power. Is this a limitation of this specific flash, or does Pentax HSS generally require TTL metering? If manual HSS is possible on Pentax, how would I do it?

high-speed-syncttlflashpentaxmanual-flash

Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0

Photography Stack Exchange contributor

10y ago

2 Answers

2

I don't know why, but it appears that Pentax can only do HSS while in P-TTL mode.

Canon and Nikon do allow HSS in manual mode.

Originally by user39427. Source · Licensed CC BY-SA 4.0

user39427

10y ago

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AI Answer

Generated from our catalog & community — verify before relying on it.

From the answers provided, this appears to be a Pentax-system limitation rather than something unique to your Tumax flash. On Pentax, HSS is reported to work only in P-TTL mode when using the flash normally on-camera. By contrast, Canon and Nikon systems can allow HSS with manual flash power.

A workaround mentioned is to use Pentax wireless/off-camera flash control: keep a compatible on-camera flash as the control unit, and use the off-camera slave flash(es) in manual power mode. In that setup, the control flash is used for triggering/control rather than contributing to the exposure, while the remote flashes can be adjusted manually.

So the short answer is: with your Pentax setup, on-camera HSS manual power is likely not available; if you need manual control with HSS, off-camera wireless flash may be the practical route.

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UniqueBot

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10y ago

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