The Yongnuo Speedlite YN-565EX Shoe Mount Flash for Canon has the TTL functionality and is compatible with the Canon E-TTL and E-TTL II. This flash offers auto zooming in the range of 24 to 105 mm and a guide number of 58 m at ISO 100. Its wide-angle diffuser widens the lighting angle vertically and horizontally and in addition, it has a 0.3 sec recycling time. Featuring an LCD panel, this flash enables easy viewing of the settings.