Both are 4800K which is equivalent to outside daylight. The strength of the modelling lamp really helps with focusing in low light situations and seeing what the light will do without having to do test shots. Connectivity

Master and Slave Function: AD400Pro can use with combination with Godox TTL camera flashes, TTL outdoor flashes etc. I love that the AD400 Pro comes in its own case, even if it is precut foam. Many previous models of Godox light didn’t, including the AD600 Pro, unless you bought it from Adorama. The AD200 also comes in a similar, but obviously smaller, case, also with precut foam. But I do wish with this one, that there wasn’t so much wasted space inside it. In summary, though, it feels like a good solid light, and it seems to have all the features that were added to the AD600 Pro in a recent firmware. I’m really hoping that Godox announces an AD200 Pro at some point in the near future to complete the “Pro” lineup and make this choice a little easier. Given the recent release of the H200R round head and EC200 extension head for the AD200, I think we’ll be waiting a while.

Normally when I shoot TTL, it’s when I’m forced to bring my camera along to family events. I’ll set my camera to aperture priority with -2EV compensation to underexpose the ambient and pop an SB-900 in the hotshoe bounced off the ceiling set to +2EV to bring the subject up where I want it. This ability to overpower the sun comes from the massive 600Ws of power that this light can produce. This light has a power range of 1/256-1/1 in 10 increments, a recycling time of 0.01-0.9s, as well as sporting TTL and HSS capabilities.

Partway through the day, we went to take a break in Glasgow Green park. So I tested my usual TTL method. Aperture priority with -2EV on the camera, and +2EV on the flash in TTL mode. The LCD dot matrix control panel, including the on-off button, is located on the side of the AD400Pro, which is much more user-friendly than the AD600Pro, where the on-off button is located on the bottom, frustratingly underneath the handle.With both units featuring Godox’s 2.4GHz X-System Radio Receiver built in, setting up a shoot has never been easier. The Bowens adapter is solid, can be left attached permanently, can still be used with the supplied reflector and all fits inside the case complete A screen grab from the XPro-P review video (coming soon) lit by the AD400 Pro modelling light inside a 4ft parabolic softbox. 1/50, f/8, ISO800.

The addition of interchangeable mounts on the AD400Pro gives you the versatility to be able to mix and match with the equipment that you’ve already invested in, which is a feature that no other strobe head on the market can do.Edit: I probably should’ve put the power & more specific details in this bit (thanks for the reminder, Ulysses). Having a battery powered flash not only removes the need for AC Power Outputs and wasting time trying to find the outlets (if there even are any available), but also eliminates the tripping hazard of cables on set.