i have a basic "flash" question, pretty new to the world of flash so bear with me if i am not explaining it correct, i purchased a ttl flash for my sony a7iii. i was happily shooting with it the other day at a indoor music event, i was using the basic kit lens 28-70. things were going well and got some decent shots etc,
i noticed i had the iso on autoo and she was at 1600 and even 3200 for some shots, this is where i am confused, i manually changed it to 100 and fired of some shots all was good, i assume the flash knows my iso and adjust the power accoerdinly to get the exposure, my question is why would it default to such a high iso in auto with the flash attatched? the whole porpose of flash is get enough light to use lower iso correct?
i shot a different event a few weeks ago prior to me updating the firmware in the flash and all the exposres were at iso 100 so i assume i must have manuall put it there,,,,,but i dont remeber having to do that. i figured it would want to use the lowest iso the flash is able to produce light for. could some one explain correct flash use to me. it worked at iso 3200 and iso 100.