If you're in the market for a high-performance flash unit that will give you the creative edge, the Nikon SB-700 AF Speedlight is definitely worth considering. With a guide number of 92' at ISO 100 and 35mm, this compact flash unit provides plenty of power for on-camera lighting. It's also compatible with the i-TTL system for automatic metering with both FX- and DX-format cameras, making it a great choice for photographers who want complete control over their lighting setup. Additionally, the auto zoom head has a coverage range of 24-120mm with FX-format cameras, which can be extended down to 12mm with the use of the built-in wide-angle diffusion panel. Additionally, the SB-700 has three different illumination patterns (standard, even, and center-weighted) which help shape the light output for your specific needs. For wireless master TTL functionality, the speedlight utilizes a Commander Mode. In this mode users can access Advanced Wireless Lighting settings for controlling multiple off-camera flashes that can be set up in two groups (A, B) and one of four channels. The SB-700 also has a quick wireless control A:B ratio setting for quickly setting up and controlling multiple remote flashes. With its versatility, power, and easy wireless operation, the Nikon SB-700 AF Speedlight is an essential tool for any serious photographer.