Long Exposure Photography, Infrared Photography

4. Other Features		4-3 Electronic flash photography


	area photographed

illuminated area

4. Other Electronic Flash Features

*Exposure compensation: The flash exposure of the Speedlight RF 20 can be compensated from -3 to +2 stop in ½-stop increments according to the subject's reflectivity.

*Backlit LCD: For insufficient lighting, the LCD panel of the Speedlight RF 20 can be illumi- nated from the back for better legibility.

*Illumination Angle Adjustment: Two illumination angles for the 65mm lens, the normal illumination angle, and the 45mm lens, the wide illumination angle, are provided with the Speedlight RF 20.

Note: The illumination range of the Speedlight RF 20 is a vertically oriented rectangular area.

4. Other Features

4-4 Long exposure photography

4-4 Long Exposure Photography

The longest nominal shutter speed of the Bronica RF 645 is eight full seconds. If a longer exposure is required, set the shutter speed dial on bulb ("B"). The electronically control shut- ter system of this camera stops consuming battery power one second after the shutter click in bulb operation in order to conserve the battery. Still, it is strongly recommended to carry backup battery cells if repeated long exposures are anticipated.

Note 1: The viewfinder LCD displays "BUL" as the shutter dial is set on "B".

Note 2: Never try to remove the lens from the camera during a long exposure.

4. Other Features

4-5 Infrared Photography

To photograph with a monochrome infrared film, follow the proce- dures described below.

1.Focus normally. Note the location on the distance scale correspon- ding to the distance scale index line.

2.Rotate the focusing ring slightly to shift the focus point to the marked point with the "R" symbol adjacent to the distance index line.

3.Attach an infrared filter on the lens and shoot. Note: For more details, refer to the infrared film instructions.