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Determine the bounce angle with respect to the distance to the reflective surface, the distance from the camera to the subject, the focal length of the lens etc. Correct Incorrect Determine the angle in relation to the following table. Focal length of lens Bounce angle 70 mm minimum 45° 28 - 70 mm 60° 28 mm maximum 75°, 90° AF illuminator In low-light or when subject contrast is low, when the shutter button is pressed partway down for Auto Focus, the red lamp on the front of the flash unit will light. This is the AF illuminator used as an aid in Auto Focus. • The AF illuminator operates even when the flash is off. • The camera AF illuminator does not operate while the flash AF illuminator is operating. • The AF illuminator does not operate while Continuous AF is used in focusing mode (when continually focusing on a moving subject). • The AF illuminator may not operate if the focal length of the lens is greater than 300 mm. The flash will not operate when removed from the camera. Applications 25 High-speed sync (HSS) High-speed sync Normal flash High-speed sync eliminates the restrictions of flash sync speed and enables the flash to be used through the entire shutter speed range of the camera. The increased selectable aperture range allows flash photography with a wide aperture, leaving the background out of focus and accentuating the front subject. Even when photographing at a wide f-stop in the A mode or M mode, when the background is very bright and the shot will normally be over-exposed, you can adjust the exposure by using the high-speed shutter. Press the high-speed sync button (HSS). • The high-speed-sync lamp comes on. • If you press the high-speed sync button (HSS) again, high-speed sync is cancelled. When high-speed sync is cancelled, the shutter speed cannot be set faster than the sync speed. • Taking photos in bright locations is recommended. • The flash range with high-speed sync is smaller than with normal flash photography. You can find the accurate flash range with high-speed sync by using the HSS flat flash (ISO100) table on page 41. Divide the guide number by the aperture to obtain the maximum distance of the flash range. For example, with a 1/500 shutter speed and 28 mm focal length, the guide number is 8 according to the table. Since 8 (the guide number) divided by 4 (the aperture) equals 2, the flash range in this case would be 2 m. The number is doubled when using ISO400. • High-speed sync cannot be used with bounce flash. • When using a flash meter or color meter, high-speed sync cannot be used because it interferes with the proper exposure. Flash Sync Speed Flash photography is generally associated with a maximum shutter speed referred to as the flash sync speed. This restriction does not apply to cameras designed for high-speed sync (HSS) photography (p. 26), since they allow flash photography at the maximum shutter speed of the camera. Applications 27 Wireless flash mode (WL) Photographs taken with the flash attached to the camera are flat as shown in photo 1. In such cases, remove the flash from the camera and position it to obtain a more three-dimensional effect as shown in photo 2. When taking this type of photograph with a single lens reflex camera, the camera and the flash unit are most commonly connected by a cable. This flash eliminates the need for a cable to transmit signals to the flash unit by using the light of the built-in flash itself as a signal. The correct exposure is determined automatically by the camera. 1 2 Normal flash Wireless flash Wireless Flash Range The wireless flash uses a light signal from the built-in flash as a trigger to operate the off-camera flash unit. Follow the points below when positioning the camera, flash, and subject. • Photograph in dark locations indoors. • Place the off-camera flash within the gray area in the following diagram. Distance between flash and Distance between camera subject (see Table 2) Place the camera and flash unit within a 5 m radius of the subject and subject (see Table 1) Do not place the flash directly behind the subject Distance camera-HVL-F36AM-subject Distance camera- subject (Table 1) Distance HVL-F36AM - subject (Table 2) Other than HSS HSS Shutter speed All shutter speeds Maximum 1/60 sec 1/60 to sync speed 1/250 sec 1/500 sec 1/1000 sec 1/2000 secAperture 2.8 1.4 - 5 1.4 - 5 1 - 5 1 - 4 1 - 3 1 - 2 1 - 1.5 4 1 - 5 1 - 3.5 1 - 5 1 - 3 1 - 2 1 - 1.5 – 5.6 1 - 5 1 - 2.5 1 - 3.5 1 - 2 1 - 1.5 – – Unit : m • The distances in the above table assume the use of ISO 100. If ISO 400 is used the distances must be multiplied by a factor of two (assume a limit of 5 m). Applications Continued on the next page 29 Notes on wireless flash • You cannot use a flash meter or color meter in wireless flash mode because the camera’s built-in pre-flash goes off. • The zoom position for the HVL-F36AM is automatically set to 24 mm. • When photographing with the wireless flash, the flash may in rare cases go off by mistake due to ambient...