Jim Erickson

Yesterday I was trying to test out my new Paul C Bluff Einsteins monolights. They work great but I may have identified a camera issue. I'm shooting with Fuji X-Pro2. What I wanted to do was layer multiple pops on a single exposure so that I could raise the Fstop for a lower ISO exposure. If I understand correctly every 2 pops raises exposure by 1 fstop. You do lose a little so for every 4 pops you need to add 1, therefore if I wanted to raise fstop by 2 stops, it would take 5 pops to do so. This is a technique I used with film years ago. Anyway I went as far as adding 15 pops on one 30 sec exposure and could not tell any difference between a 1 pop exposure and a 15 pop exposure. My expectation was by adding 15 pops I should have blown the image completely out but instead I saw no difference. It was like after one pop the sensor shut down and didn't add anymore. Is this something unique about either digital or Fuji specifically? I've searched the internet and can't seem to find the answer. Hopefully someone in here knows the answer. By the way I tried every different Flash mode available. I even tried shooting without anything in the camera communicating with any flash equipment by shooting in Blub for 30 sec and triggering the lights manually, trying to build up exposure. Hopefully someone here knows the answer. Thanks.