I am looking for a cheaper price for my sony cameras. My reliable but old sony hvl f56 and sigma super 530 st flash. I saw this shashinki.com online and sent a message to them. Response time is expectacular and it's the owner whose the one replying to email. In short I inquire about the nissin flashes for sony and asked them if it's firmware is updated. They are honest and send the unit to their supplier before sending it to me. Guys it's worth a try to buy from them.