I'm looking for a high quality circular polarizing filter to fit a Sigma 150-600 zoom lens with a 95mm diameter, and the options at this size seem somewhat limited. Notably, the Hoya Pro1 CPL that's ...
I have a Sigma 610dg super flash that I wish to trigger with the TriggerTrap flash adapter (tt-fa1). Sadly I cannot make this work. I have tried two different TriggerTrap dongles but the flash never ...