Pentax K-7 K-7 Manual - Page 170
Flash Characteristics in Each Exposure Mode, Using the Slow-Speed Sync
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168 Flash Characteristics in Each Exposure Mode Using the Flash in b (Shutter Priority) Mode • When taking a moving subject, you can use the flash to change the blur effect. • Any desired shutter speed 1/180 seconds or slower can be set for taking a flash photograph. • The aperture value automatically changes according to the ambient brightness. • The shutter speed is locked at 1/180 seconds when a lens other than DA, DA L, D FA, FA J, FA, F or A is used. Using the Flash in c (Aperture Priority) Mode 5 • You can set the desired aperture to take a flash photograph when you want to change the depth of field or shoot a subject farther away. • The shutter speed automatically changes with the ambient brightness. • The shutter speed shifts automatically anywhere from 1/180 seconds to a slow shutter speed (p.64) that reduces camera shake. The slowest shutter speed depends on the focal length of the lens in use. • The shutter speed is locked at 1/180 seconds when a lens other than DA, DA L, D FA, FA J, FA or F is used. Using the Slow-Speed Sync You can use slow-speed-sync in b (Shutter Priority) mode when shooting portraits with the sunset in the background. Both the portrait and the background are captured beautifully. • Slow-speed Sync shooting slows the shutter speed. Use the Shake Reduction function or turn off the Shake Reduction function and use a tripod to avoid camera shake. The picture will also blur if the subject moves. • Slow-speed Sync shooting can also be performed with an external flash. Using the Flash