P-TTL Pentax K3 and Sigma EF-500 DG Super PA

AfterPentax Mark II · 08-29-2021, 01:17 PM

Originally posted by stevebrot

The linked manual is for the ST model, not the Super. They are different.

The EF-500 DG Super PA is supposed to be a broadly compatible P-TTL flash with limited feature set. I don't believe it supports the digital TTL protocol supported by many Pentax AF bodies.

Steve

You are right!

35mmfilmfan · 08-30-2021, 12:13 PM

Following the advice given by many of the respondents to my original query, i carried out further tests today, and I can confirm that the flash works in total manual mode using the X setting. However, as I have a Yongnuo 560 flash that performs the same task, I shall still be attempting to persuade my local camera dealer to purchase it.

Thanks again for all who replied.

kypfer · 09-17-2021, 05:56 AM

Quick update (and a chance to show off!) …
I've just received a Sigma EF-500 DG ST PA-PTTL (£5 + p&p from your local friendly auction site, including a set of Duracells!) and can confirm that it works (almost) perfectly as a P-TTL flash on the bodies I've tried.
The only slight niggle is that the focal length indicator LEDs on the flash relate to a full-frame camera, but are accurate on an APS-C camera, in that the flash appears to interpret the angle of coverage of the fitted lens and adjusts itself to suit, with no vignetting.
One happy bunny

35mmfilmfan · 09-17-2021, 12:46 PM

Glad to hear it !

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08-29-2021, 01:17 PM	#16
AfterPentax Mark II Pentaxian Join Date: Mar 2021 Posts: 1,465	Originally posted by stevebrot The linked manual is for the ST model, not the Super. They are different. The EF-500 DG Super PA is supposed to be a broadly compatible P-TTL flash with limited feature set. I don't believe it supports the digital TTL protocol supported by many Pentax AF bodies. Steve You are right!

08-30-2021, 12:13 PM	#17
35mmfilmfan Pentaxian Join Date: Oct 2016 Location: Norfolk, UK Posts: 4,336 Original Poster	Following the advice given by many of the respondents to my original query, i carried out further tests today, and I can confirm that the flash works in total manual mode using the X setting. However, as I have a Yongnuo 560 flash that performs the same task, I shall still be attempting to persuade my local camera dealer to purchase it. Thanks again for all who replied.

09-17-2021, 05:56 AM	#18
kypfer Pentaxian Join Date: Jan 2018 Location: Jersey C.I. Posts: 3,595	Quick update (and a chance to show off!) … I've just received a Sigma EF-500 DG ST PA-PTTL (£5 + p&p from your local friendly auction site, including a set of Duracells!) and can confirm that it works (almost) perfectly as a P-TTL flash on the bodies I've tried. The only slight niggle is that the focal length indicator LEDs on the flash relate to a full-frame camera, but are accurate on an APS-C camera, in that the flash appears to interpret the angle of coverage of the fitted lens and adjusts itself to suit, with no vignetting. One happy bunny

09-17-2021, 12:46 PM	#19
35mmfilmfan Pentaxian Join Date: Oct 2016 Location: Norfolk, UK Posts: 4,336 Original Poster	Glad to hear it !