Yay, camera math.

I got AD600 Pro and I love it. It even fits in Peak Design's Messenger 15L bag with 2 lenses and A7III.

Hey Sergio, as a beginner with flash (I think I commented on another of your videos), the main benefit for me of calculating a GN for me is/was a factor in equalizing the playing field when it came to the advertised "watts". With the assumption of a f/stop of 1.0, it makes the calculation easy and compare a flash with 500Ws vs one with 600Ws - and find that that 500ws flash is actually just as, or more efficient - if that's important (all else being equal). Thanks for your video.

Good advice to the young photographer, I have a 3000 wt flash pack that l used in the days of film. Now and then l will bring it out when you just need that amount of flash power to shoot small aperture from a distance. Good video.

Yep, I’ve done that with QT600s. Two meant I could turn each down 1 stop and have a larger surface area of light. And to boot I got better flash durations.

I like the videos thank you. Funny how you talk about what makes a worthy flash, meanwhile the camera drops focus @1:20 :D

I have 4 Flashpoint 400's, and one each of the ad100, 200, 300. My next acquisition will be the AD600. You pushed me over the edge.

Great insight 👍

Please note aperture and f-stops are different. You can get two lenses set to the same fstop and they will have a different effective aperture.

Not "wattage", its watt seconds. Only constant light sources are measured in "watts". They are apples and oranges, terminology matters.

Interesting, I was just thinking of getting some matte flat lays. So perhaps good timing if they ship internationally.