Just received today but very impressed with this little flash! Lots of features. In manual mode, each performance parameter can be adjusted, e.g. B. Each performance parameter can be set to -0.7, -0.3, 0, +0.3 and +0.7, a convenient function. For macro photography, which makes up 90% of my photos, I don't need a lot of energy. I wouldn't hesitate to buy another one, in fact I'm planning on pairing it with a wireless transmitter. Significantly lighter than my other flash, it makes a difference when you have a camera for several hours! When it arrived I had to use batteries from another flash, I took 184 shots and it never missed! I mainly shot in manual mode and at more than 1/16 power.