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Batteries • The battery level displayed on the control panel may be lower than the actual battery capacity, temperature, and storage conditions. The displayed battery level is restored to the correct value after the flash has been used a few times. • Nickel-metal hydride batteries can lose power suddenly. If low-battery lamp starts blinking or the flash can no longer be used while taking pictures, change or recharge the batteries. • The flash frequency and number of flashes provided by new batteries may vary from the values shown in the table, depending on the time elapsed since manufacture of the batteries. • Remove the batteries only after turning the power off and waiting several minutes, when changing the batteries. The batteries may be hot, depending on the battery type. Remove them carefully. • Remove and store the batteries when you do not intend to use the camera for a long time. GB52 Temperature • The flash unit may be used over a temperature range of 0 °C to 40 °C. • Do not expose the flash unit to extremely high temperatures (e.g. in direct sunlight inside a vehicle) or high humidity. • To prevent condensation forming on the flash, place it in a sealed plastic bag when bringing it from a cold environment into a warm environment. Allow it to reach room temperature before removing it from the bag. • Battery capacity decreases at colder temperatures. Keep your camera and spare batteries in a warm inside pocket when shooting in cold weather. Low-battery lamp may blink even when there is some power left in the batteries in cold weather. Batteries will regain some of their capacity when warmed to normal operating temperature. • This flash unit is not waterproof. Be careful not to bring it into contact with water or sand when using it at the seashore, for example. Contact with water, sand, dust, or salt may result in a malfunction. Maintenance Remove this unit from the camera. Clean the flash with a dry soft cloth. If the flash has been in contact with sand, wiping will damage the surface, and it should therefore be cleaned gently using a blower. In the event of stubborn stains, use a cloth lightly dampened with a mild detergent solution, and then wipe the unit clean with a dry soft cloth. Never use strong solvents, such as thinner or benzine, as these damage the surface finish. Additional Information 53GB Specifications Guide number Normal flash (ISO100) Flash Coverage Setting (mm) 16* 24 28 35 50 70 105 GN Manual flash/ 35mm-format 13 23 23 25 30 35 42 APS-C format 13 25 26 30 35 38 42 * When the wide panel is attached Frequency/Repetition Alkaline Nickel hydride (2500 mAh) Frequency (sec) 0.1 - 3.7 0.1 - 2.7 Repetition (times) Approx. 180 or more Approx. 260 or more • Repetition is the approximate number of times that are possible before a new battery is completely dead. Continuous flash 40 flashes at 5 flashes per second performance (Normal flash, light level 1/32, 105 mm, nickel-metal hydride battery) AF illuminator Autoflash at low contrast and low brightness Operating range (with a 50 mm lens attached to DSLRA700) Central area: 0.5 m to 6 m Pripheral areas : 0.5 m to 3 m Flash control Flash control using pre-flash, TTL direct metering Dimension W 75 . H 123 . D 100 mm (3 . 4 7/8 . 4 inches) (Approx.) Mass (Approx.) 340 g (12 oz) (excluding the batteries) Recommended AA-size alkaline batteries batteries AA-size rechargeable nickel-metal hydride batteries Included items Flash unit (1), Mini-stand (1), Case (1), Set of printed documentation Functions in these operating instructions depend on testing conditions at our firm. Design and specifications are subject to change without notice. GB54 Trademark is a trademark of Sony Corporation. Printed on 70% or more recycled paper using VOC (Volatile Organic Compound)-free vegetable oil based ink. 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