překlad : Pros: Works perfectly without preflash sensing. Does not seem to require any batteries which is a pleasure because there would be no replacement issues. Triggers my YY flash just fine. Solid construction. Cons: There's no setting that will allow you to ignore the preflash of a E-TTL or E-TTL II flash. Most canon DSLR in-built flashes use a E-TTL preflash system. In which case, the strobe attached to this item will trigger too quickly resulting in complete missing of exposure. Other Thoughts: A good way to solve the abovementioned problem is to activate the flash exposure lock (FEL) while pointing the camera away. In this case, no preflash will fire and the sync will be right. Bottomline: Get this for a cheap optical slave trigger. Make sure your camera or strobe supports manual mode. E-TTL flashes are not supported