I used the Profoto B10X and B10X Plus as two-head kit, triggering them via an AirTTL or Profoto Connect in the hotshoe of a Sony A7 IV. On every occasion, the lights connected quickly with the trigger and they fired consistently.
I also joined pro portrait and wedding photographer Robert Pugh for an outdoor portrait shoot to see how he felt they compare with the B10 and B10 Plus that he uses for his work. He used the new lights without skipping a beat because they work in exactly the same way, delivering consistently powered light and triggering reliably. As you might expect, however, the new lights don’t offer enough difference to make it worthwhile upgrading from the predecessors.
During the two-hour session with Robert we shot a total of 290 images between us, using both lights at around half-power and without the modelling light. We tweaked the power between shots to get a different look and even shot a few in a burst. At the end of the shoot, the B10X Plus battery life indicator had dropped by one bar out of four while the B10X still showed four bars.
Later, after recharging the battery to ensure it was at 100%, I was able to get over 1200 full-power flashes from the B10X Plus before the battery was exhausted. The light was set to manual mode with the power set to 10 but the modelling light was again off. Profoto rates the battery as having a 200 full-power life with the B10X Plus and 400 with the B10X. Clearly, that’s a conservative quote designed to give photographers some headroom and perhaps to allow for ageing of the battery.
Profoto’s estimate of up to 75 minutes (B10X) and 65 minutes (B10X Plus) for the battery life in full-power continuous lighting mode, however, proved accurate.
In constant mode, I was able to use an aperture of f/8 and shutter speed of 1/30 sec at ISO 200 with the B10 X Plus at full-power and around 1m from my subject. That’s perfectly usable for video, however, the fan noise is an issue. It’s not loud, but there’s a constant hum that could be problematic depending upon the location of the microphone.