Most folks know the iPhone 11 & 11 Pro take spectacular photos, but, being of the phone, the flash is limited. This new Anker MFi flash accessory uses the Lightning connector for tight synchronization with the iPhone rear camera & works with the native camera app and 3rd party apps. Anker says it helps illuminate objects at 2x the range and 4x brightness. It ships with a detachable diffuser and a soft carry pouch. 10,000 shots per charge. Enables off-axis and direct fill flash lighting effects both with and without the detachable diffuser.
Chris took Leo's advice and picked up a low-cost FlashPix Flash. Great flash that you can remove from the transmission connector on the hot shoe, and position the light off-camera. It also doubles as a video light. But it does have one fault: it's completely manual. It doesn't support through the lens (TTL) flash, which most flashes do in this modern age. Still, it's a great flash to have in your bag.
Chris says that lights have color and flashes can be regulated to put out different powers of flash, but the cameras can also white balance to the flash if they're good. Flash pictures can look terrible, though. They look washed out, and that's largely due to direction. Mobile phones obviously point the flash straight into your face. That's not a nice light -- it's harsh and flat. Leo says it takes all the contour out, and there's no shadow cast. The size of the light can also determine how good the flash is. But flashes happen so fast, you can't fine tune it.
Chris says a flash on a camera has very quick fall off, and the output of the flash used to not have the ability to be changed. So it was an all or nothing affair. Electronic flashes today give excellent control, though. It's almost like the camera takes two pictures because it meters for the ambient light, fires a preflash, meters that and then fires the actual flash. It uses just enough of the flash to light the foreground, but leaves the shutter open a bit more to get better detail. This helps achieve a better balanced exposure. It's called TTL (through the lens) flash.