All three models are powered by 4-AA batteries / accumulators. Also included take nothing (pocket base).
Olympus FL-600R flash for OM-D and PEN models
Guide number: 36 (ISO 100), 50 (ISO 200)
Advantages: compact (9.8 x 6.2 x 10.4 cm; 254 g), duration of LED video lighting, high-speed sync, second flash
Disadvantages: guide number, high price (about 350 euros), volume at store
Conclusion: The bottom line is I can say that the Olympus model would appeal perfectly due to its compactness me because I have gained my E-M1 also for this reason. The duration LED for video fans is a great addition, but is the very high prices and the volume loading in the way. Also from the guide number it can not compete with the two Metz models. Too Bad.
Metz mecablitz 52 AF-1 digital for Olympus and Panasonic
Guide number: 52 (ISO 100)
Advantages: Price (199 euros), guide number, high-speed sync, firmware updates via USB interface, modeling light (permanent light for checking the photo before illumination)
Cons: Big and heavy (9 x 7.3 x 13.4 cm; 340 g) Battery locking hooks, no second flash
Conclusion: The Metz mecablitz 52 AF-1 provides for a special price a very good performance and update capabilities via USB. However, it lacks the second flash and the battery latch hooked me repeatedly. Also to install the batteries did not go quite as smoothly as the Olympus model. In addition, he brings nearly 90 grams more on the scales than the Olympus flash unit and is much larger.
Metz MB 58 AF-2 Olympus Panasonic flashgun
Guide number: 58 (ISO 100)
Advantages: guide number, high-speed sync, second flash, firmware updates via USB interface, modeling light (permanent light for checking the photo before illumination)
Cons: Big and heavy (9.9 x 7.1 x 14.8 cm; 363 g), price (about 275 euros), defective closure of the USB ports (keeps falling off), locking in 90 ° angle (makes the rapid change difficult)
Conclusion: Priced between the other two models is the Metz mecablitz 58 AF-2. It offers the best performance, but is the largest and heaviest in flash in the test field. When removing the batteries always the lowest of 4 AA batteries got stuck, but this is not so tragic. He also has a USB port for firmware updates. An automatic locking as soon as the flash at a 90 ° angle is, I can get used to that, but not. To the extremely poor USB Lock
I search a flash unit with a very good performance at a good price comes after the test only the Metz MB 58 AF-2 in question. Is me a compact device important the choice falls on the Olympus FL-600R. When on a tight budget you can grab mecablitz 52 AF-1 only for Metz.
The Metz MB 58 AF-2 is nearly 75 euros cheaper than the Olympus FL-600R, 75 euros more expensive than its little brother. But he still has more power (guide number, second flash) as the Metz mecablitz 52 AF-1. But the largest and heaviest model in the test but this is to absorb for me, since I do not always need it only for events and in my travels. The angle-lock I can befriend determined yet, but what do I do with the humble USB flap ??? Ultimately my purchase decision will be made on the Metz MB 58 AF-2, which was just the most convincing in my test week.