Compatible With All Nikon SLR's. FEATURES INCLUDE: Multi-sensor balanced fill flash with F5, N90s, N70 or AF and AI-P Nikkor lenses. Matrix-balanced fill-flash with F4-series, N6006, N6000 or N50 and AF and AI-P Nikkor lenses. Selectable main flash coverage angles (28mm, 35mm, 50mm, 85mm). Tilting, rotating main flash head from -7ø to 90ø for bounce flash shooting. SB-16A for F3 series cameras includes AS-8 Flash Unit Coupler. SB-16B for Nikon cameras with standard ISO hot shoe includes AS-9 Flash Unit Coupler. Battery Holder MS-5. Guide number (ISO 100 in feet) 138 with zoom head set at N (85mm). Recycling time at full manual output approximately 11 seconds, more flashes and shutter recycle times are possible in TTL mode.