I never really got into flash photography so I don't know much or anything using flash or studio lighting.
mattdm has an excellent site on Pentax flash. There is a lot of information in there and I have to admit, it is too much for me to take in all at once.
Pentax P-TTL Hot Shoe Flash Comparison - a knol by Matthew Miller
On his page he states this:
Quote: Sigma's older EF 500 DG models are basically the same with about 10% less power. The older flashes flashes may need to be sent to Sigma for a free firmware upgrade for compatibility with current Pentax camera bodies, and the current Sigma flashes may need the same for future cameras.
I have question on the part that I put in bold. I do not know when he wrote this or when it is updated. But do you need a firmware upgrade for the 530 DG super, for the K20D?
Also what is involved in sending the flash in? Do I have to pay for shipping to them? Do I have to pay for it to be shipped back? Is it shipped to Japan or the United State?
Originally I planned to get the Pentax 540, but I got a really good deal through amazon. The flash is $220, the normal price and I get a 20% off so it brings the price to $180 for the Sigma 530 DG Super.
So is the 530DG super worth $180?