After the capacitor of the first inlet and immediately returned Speedlites despite a much smaller experiments with fresh batteries not even invite left, a second copy was ordered, not only on after the first short test both the TTL, as well as in M mode -camera (Nikon D90), but also off-camera and without, together with the new radio triggers of Yongnuo (YN622n and YN 622 TX) seems to function properly. The set on Speedlite itself as well as the YN 522 TX exposure compensation control the exposure in -3 to +3 EV steps. If the (anxious) question of the reliability, ie for how long this incredible value and (except for HSS [untested]) to be used varied Speedlite Camera Plus will continue to work without problems. The carried out brief test states in this respect nothing, except that the second copy sent me supplied has passed this. Look and feel of a Speedlites are more a matter of taste that has to do with its functionality and reliability little. Whether the CP-N580 TTL will work problemslos in the future, will prove over time. However, there is so far nothing that would have noticed critical and in this respect doubts could arise. Everything can be so operate as you want it, and thanks to the written in halfway understandable English manual and the inexperienced should cope relatively quickly with the operation. The extent to which the CP-N560 TTL (except with the D90) with all the old and new digital cameras from Nikon work as described, will teach the future. On the other hand, the owner of a Nikon receives the CP-N580 TTL a Speedlite which (except for HSS so) nothing to be desired and of functionality (and probably also production quality) of other Chinese Speedlite manufacturers not inferior and a lot cheaper at the same time is to have. Additional: This Speedlite is so excellent that I have now gained me a second (for at that time valid price of 59.99). It works on -camera as perfect as off-camera, especially with the radio triggers YN YN 622N and 622 TX by Yongnuo. The price-performance ratio is still unbeatable. I highly recommend this Speedlite (at least so far) is not high enough praise.