Opteka IF-500S TTL Dedicated Compact Flash w/LCD Display + Case for Sony NEX 3, NEX 3N, NEX 5, NEX 5T, NEX 5R, NEX 6, NEX 7, A5000, A5100, A6000, A6100, A6300, A6500, A9 APS-C DSLR Cameras DEDICATED - The Digitalmate 130N dedicated flash is a flash unit that fits into your camera's hot shoe. The dedicated flash is a great piece of gear that communicates with the camera. A dedicated flash is a far better tool than the built-in flash because of the versatility it gives you. AUTOFOCUS - The Digitalmate flash provides an independent AF assist. When a flash is mounted to the camera, the AF Assist option is enabled. The normal AF Assist light will not be used, instead the flashes autofocus assist system will take effect. TTL - The flash and ambient light are reflected by the subject through the camera lens and then metered by the camera's TTL metering system. The flash power is adjusted accordingly. A digital camera TTL flash system, often known as E-TTL, involves firing a pre-flash before the actual exposure QUICK SPECS - Full TTL dedication, Backlit LCD screen, Guide number: 130 ft. (40m), Power save mode, Auto temperature control (overheat protection), Fine brightness control, Metal hot shoe, Rapid recycle time (0.2-6 seconds), Works on 2 AA batteries, Memory function (retains previous setting after restart) COMPATIBILITY - Sony NEX 3, NEX 3N, NEX 5, NEX 5T, NEX 5R, NEX 6, NEX 7, A5000, A5100, A6000, A6100, A6300, A6500, A9 APS-C Digital SLR Cameras