The PENTAX AF540FGZ auto flash unit features a large guide number of 54 (at ISO100/m). This clip-on, twist/tilt, auto-zoom flash provides a variety of advanced flash applications, including P-TTL auto flash, high-speed synchronization and wireless P-TTL auto flash, when mounted on a PENTAX digital SLR camera.
- Manufacturer: PENTAX Imaging Company
- Manufacturer Part Number: 30425
- Manufacturer Website Address: www.pentaximaging.com
- Brand Name: Pentax
- Product Model: AF540FGZ
- Product Name: AF540FGZ Auto Flash
- Product Type: Camera Flash
- Flash Modes: P-TTL, TTL, Automatic, Manual
- Guide Number: 45 m/148 ft at ISO 100 (50 mm Zoom-head Setting), 54 m/177 ft at ISO 100 (85 mm Zoom-head Setting)
- Flash Range: 26.20 ft
- Number of Batteries Supported: 16
- Battery Size Supported: AA
- Battery Life: 350 Flash
- Mount Type: Shoe Mount
- Height: 5.6"
- Depth: 4.2"
- Weight (Approximate): 13.40 oz