User manual PENTAX AF100P

[. . . ] The pair on the opposite side remains off or can be set to flash at half power when desired. A modelling light simplifies image composition. The most common application of ring lightning is macro photography. [. . . ] The most common application of ring lightning is macro photography. Other uses are portraiture and for documentation of dental and medical procedures. The AF-160 FC is compatible with all cameras in the PENTAX system. Type GN Power range Flash function Electronic flash 16 at 50mm (at ISO 100) Flash correction ­1. 0 to +0. 5 EV In 0. 5EV steps P-TTL A-TTL Manual (3 steps 1/4 ­ 1/16) 0. 18 ­ 2m at f/8, ISO 100 4x AA batteries (Alkali, Lithium, Ni-MH or rechargeable) 60° Digital, 35mm, 645, 67 Controller: 68 x 83x 115mm (W x H x D) Flash unit: 113x29. 5mm (Diam x D) 405g (without batteries) Standard Accessories Case for Ring flash and accessories Macro lens adapter Adapter ring 49mm Adapter ring 52mm Adapter ring 58mm Adapter ring Flash range Code no. 30482 Power source Flash angle Compatibility Dimensions Weight As of 23. 09. 08/photokina All data reserved without guarantee. F L AS H F UNCTIONS TTL Auto flash (A-TTL) The flash is controlled by the amount of light reflected off the film surface during flash exposure, automatically controlling the flash output to assure correct exposure. This mode of operation functions with all PENTAX autofocus cameras (excluded MZ-S and digital SLR), the 645-Serie and 67II. Zoom - Swivel Reflector/Catchlight panel The best light does not always come from the front. Sometimes the situation calls for the light to be reflected from a near-by surface such as a white wall or ceiling. A bounce head flash is invaluable for this purpose, especially one that can both tilt horizontally and rotate vertically. Because the reflective surface used may not be perfect a quantity of light is lost. Using second curtain sync, the first shutter will open, the car will move past leaving a streaked image and then the flash will fire as the second shutter curtain begins to close causing the "streak" to be behind the car where it is expected to be. Manual flash (M) The Guide Number and subject distance determine the correct aperture of the lens that must be set manually. This mode of operation is available with all cameras. AF Spot Beam (SB) When using an autofocus camera in weak or low-contrast lighting conditions a red AF light beam is flashed to make optimal focusing possible. The flash is not fired in this function. Guide Number The higher the Guide Number the greater the luminosity and/or range of lightning. High-Speed-Synchronisation With the appropriate camera a faster shutter speed can be used. This function is very effective for fill-flash in daylight. The GN is reduced for high-speed sync. Wireless Flash Control There are many application that may require multiple flashes. This can be done when the camera's built-in flash is picked up by a photocell in the remote flashes, causing the remote flashes to fire in unison. This is ideal for lighting large areas or for effect light. This process is greatly simplified through P-TTL control. [. . . ] This can be done when the camera's built-in flash is picked up by a photocell in the remote flashes, causing the remote flashes to fire in unison. This is ideal for lighting large areas or for effect light. This process is greatly simplified through P-TTL control. [. . . ]