Designed for use with Nikon DSLR cameras with a hot shoe, this Insignia™ NS-DXFL2N external TTL flash features S1 and S2 slave modes to enable off-camera use with your camera's built-in flash as a master trigger.
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Pros: Paired with my Nikon D7100. The Nikon price for the same product is $350 so if you're a amateur like me that doesn't wanna spend that much this is it. Does a good job focusing and powerful enough. I recommend try to use it on the lower power settings. Took 350 pics and batteries still good. Cons:Takes a few seconds to recharge especially when using on high flash power. If used intensely batteries will get very warm and it stops triggering. Would of been even nicer to come with a diffuser. Hint: Take with you 3-4 packs of batteries and when you shot intensely you change and let them cool down.