This is a gear wheel, it's on a machine in our workshop for repair so I thought I would try out the new ring flash.
This was taken without flash, sorry forgot to get EXIF data.........DOH.
This was taken with flash, 1/250 sec @ f2.8
The only trouble I have found so far, is there seems to be no way of controlling the flash output (cheap speedlight) and the flash unit is rather larger than I thought and hinders the sensor on the speedlight. I did say this was the Mk1 version, so I have a cunning plan, going to look into it tonight. Apart from these small set backs, not a bad first attempt!