Hi,I have a DSLR PENTAX K20D, and Flash SIGMA EF 530 DG Super, V6 are compactible with this flash?Thanks for answers.
... Both Tx and Rx show the Af540FGZ II flash.
Apparently the 540 FGZ II needs to be put into "P-TTL HSS" mode (not just "P-TTL" mode) in order to support remote power level control. At least that's what serialphoto posted elsewhere. Just mentioning it in case it helps someone else.