I have both Sigma EF-610 DG Super and Pentax AF540FGZ.
The Sigma was not always compatible with my old (
sold now) K10d.
Very often the shots were totally overexposed (
just white picture on the screen).
The solution to go around the above was strange: change the camera mode to "Green", make 2-3 flash shots with Sigma in "Green" mode, then change the camera body mode to your favourite one (
i.e. TAv, M, X).
I was living with that Sigma flaw for 2-3 years (
I got Sigma 'Like New' from Amazon seller, but it was secondhand, not visible marks of use, $170), than last Black Friday I got new AF540FGZ (
$219 delivered); as a AF540FGZ II is coming, the prices of AF540FGZ has dropped a lot.
This week I gave my Sigma EF-610 Super second chance and played a little with K-3 body.
And got the same incompatibility as with old K10d before.
I do not know if that is my specific item flaw (
someone returned this item to the seller?), or just Sigma incompatibility flaw.
Besides the above, Sigma EF-610 DG Super is very nice piece of hardware, well build (
I do not find the overall build inferior to AF540FGZ, I like the touch of Sigma much more than touch of AF540FGZ), easier to pack the gear (
Sigma is flatter, when Pentax has protruding AF assist light reflector), but Sigma lacks an Auto (
non-TTL "A") mode.
I was to keep Sigma as a spare for wireless set-up, but found again strange behaviour of EF-610:
* Sigma by design blinks with its red front focusing beam light every second or so, which might be annoying and/or distracting (
i.e. in church);
* It happened for me that 3-5 seconds after the successful wireless setup shot, Sigma alone shot again with short white flash on its own; this I do not understand and again might be distracting on locations.
Conclusion:
As a price gap between Pentax AF540FGZ and Sigma EF-610 DG Super narrows, I would recommend going for the former. Or check with Metz.
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Originally posted by Blacknight659 I want to know if you would select the flashes I have below or push me towards somethign else.