User manual NIKON SB-21
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Manual abstract: user guide NIKON SB-21
Detailed instructions for use are in the User's Guide.
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Thank you for your kind patronage of Nikon. We hope the Nikon Macro Speedlight S8-21 will make photography a much bigger part of your life. Get to know your S8-21 , but before using it, be sure to read this manual and the instruction manuals for your camera and lenses. Nikon cannot be held responsible for malfunction resulting from use of the S8-21 other than as specified in this manual, or from use of the S8-21 with a camera made by a manufacturer other than Nikon. [. . . ] With lens in normal position: Set the lens index on the controller to the focal length of the lens in use. The two dots between the numbers on the film speed scale stand for intermediate settings. Full light output
1/4 light output 1/16 light output
Determine proper aperture for desired â¢ reproduction ratio. To ensure a correctly exposed picture, it is recommended that you take additional shots with the lens aperture opened or stopped down by one f/stop. 39
GUIDE N U M B E R - - - - - - - - - - - - - - See the table below for guide numbers. )
Amount of light output in M mode
For both flash modules with controller batteries Full For only one flash modu le or wi th external power sourceÂ· 5 (21) 800 36 (120) 42 (139) 18 (60) 9 (30) 1000 41 (135) 48 (156) 21 (68) 10 (34) 1600 52
60 (197) 26 (85) 13 (43)
â¢ For external power source with only one flash module, see the figure indicated in the column to the right (column for one step higher film speed)
In TTL auto flash operation, for usable apertures with a reproduction ratio lower than 1: 10, use the following equation: Usable lis tops guide number at full output flash-to-subject distance guide number at 1/16 output flash-to-subject distance
In manual flash operation, for usable aperture with a reproduction ratio lower than 1: 10, use the following equation: guide number Usable flstop = - - = - - - - - - - - flash-to-subject distance
READY-LIGHT INDICATIONS----------When the controller AS-12 or AS-14 is turned on, the controller ready-light comes on to indicate flash is ready to fire. To activate the viewfi nder ready-light function when using the Ni kon F4-series, F-801 /N8008, FA, FE 2, F-501/N2020, F-301/N2000, FG or FG-20, turn on the camera meter by lightl y pressing the shutte r release button. With alkaline-manganese or zinc-carbon batteries, if the ready-light takes more than 30 sec. Ready-Light Warning Functions
To prevent errors listed below, the ready-lights inside the came ra's viewfinder and on the controller blink, after the S8-21 is turned on. with SB-21A
Blinking ready-light Inside viewfinder On ASÂ· 12 Problem and remedy
1) The AS-12's mounting foot is not securely locked. 2) The AS-12 is set at TTL with a camera other than a Nikon F3-series camera. 3) In TTL mode , the film speed setting on the camera is beyond the usable range . 4) The flash fired at full light output in TTL mode ; lighting might be insufficient. The shutter speed set on the FM2 or FE is faster than the flash sync speed. 0
Blinking ready-light Inside viewfinder On AS-14 Problem and remedy
1) The AS-14 is set at TIL with a camera other than Nikon F4-series, F-801/N8008, FA, FE2, F-501/N2020, F-301/N2000 or FG. 2) In TIL mode, film speed setting on the camera is beyond the usable range. Use film within the correct range for TIL auto flash photography-ISO 25 to 400 with the FA, FE2 or FG; ISO 25 to 1000 with the F4-series, F-801/N8008, F-501/N2020 or F-301 /N2000. With the FA, the ready-light also blinks when the film speed setting on the camera is near ISO 12. 3) With the FA, FE2 or FG in TIL mode, the camera's shutter speed dial is set at a mechanical setting (M250 , M90 or B). For M250, M90 or B setting, reset the AS-14's mode selector to M. On the F-501 /N2020 and F-301 /N2020, B is not a mechanical shutter speed setting; you can use any setting on the F-501 /N2020's exposure mode selector dial or F-301 /N2000's shooting mode selector dial. 4) When the shutter speed set on the FM2 or FE is faster than the flash sync speed. [. . . ] 47
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The following graphs show the relationship between the subject-to-film-plane distance and aperture set on the lens at ISO 100. With one step lower film speed, use one stop wider aperture (smaller f-number), and vice versa. Note that the graphs for lenses in normal position only show apertures at reproduction ratios lower than 1: 1. Apertures are not given for higher reproduction ratios with lenses in normal position. [. . . ]
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