Modern Classic SLRs Series :
Additional information relating to Nikon SB800 AF-TTL Speedlight - Part III

 
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Manual Flash mode The SB-800 features three (3) manual modes. You can calculate the correct aperture by using the guide number table and the shooting distance. Then set the same aperture manually on the lens. In this case, set the cameraís exposure mode to Aperture-Priority Auto (A) or Manual (M). Again, like the A mode, there is NO limitation on usable cameras with this mode. With the SB-800 in the Manual mode, if the cameraís exposure mode is set to other than Aperture-Priority (A) or Manual (M), the shutter may not be released, depending on the cameras in use.

iconGN.gif Distance-priority manual flash Please note, unlike in the A/TTL modes, when using the Manual mode, there is NO warning ready-light blinks to indicate that the light may have been insufficient for correct exposure after shooting.
icon-M.gif Manual flash
iconRPT.gif Repeating flash

Determining the aperture and flash output level in the Manual mode
tableD.gif
In the Manual mode, use the guide number table and the following equation to calculate the aperture, flash output level, and shooting distance to obtain the correct exposure. The guide number (GN at ISO 100; m/ft) indicates the amount of light generated by the flash. The larger the number, the greater the flash output.

*1 With the Nikon Diffusion Dome attached and the wide-flash adapter in place
*2 With the Nikon Diffusion Dome attached
*3 With the wide-flash adapter in place

To calculate the correct aperture Calculate the correct aperture by using this equation and the guide number table, according to the ISO sensitivity, flash output level and zoom-head position that are set (Note: Set the same aperture on both the SB-800 and the camera or lens): -
equationA.gif

To calculate the guide number
Calculate the guide number by using this equation, according to the shooting distance and aperture required.
equationB.gif Referring to the guide number table, determine an appropriate flash output level corresponding to the guide number obtained above, then set the same value on the SB-800. In Distance-priority manual flash operation, the guide number (indicating the amount of light generated by the flash) is automatically determined by the SB-800 according to the distance value and aperture set.

ISO sensitivity factors For sensitivities other than ISO 100, multiply the guide number by the factors shown in the table below.
equationC.gif

iconGN.gif Distance-priority manual flash In this flash operation, the SB-800 automatically controls the light output according to the distance value and aperture set. Enter the distance value and you can take pictures having the same exposure even when shooting at different apertures. Note: This mode allows you to make exposure compensation by varying the flash output level compensation value

1 Set the cameraís exposure mode to Aperture-Priority Auto (A) or Manual (M). 2 Press the button to display iconGN.gif on the LCD panel. 3 Press the iconSEL.gif button to highlight the distance display, then press the or iconminus.gif button to increase or decrease the distance values. The usable distance range is 0.3m to 20m (1 to 65.6 ft.) and varies depending on the ISO sensitivity. 4 Set the aperture. For cameras compatible with CLS, digital SLRs not compatible with CLS, and cameras in Groups I and II with CPU lenses, set the SB-800ís aperture on the camera. You cannot set the aperture on the SB-800 directly.

MflashA.gif MflashB.gif MflashC.gif
For other camera/lens combinations, press the iconSEL.gif button to highlight the aperture display, then press the or iconminus.gif button to increase or decrease the aperture value.
MflashD.gif MflashE.gif MflashF.gif
Set the aperture that appears on the SB-800ís LCD panel on the lens or camera. Applicable to cameras in Groups III to VII. 6 Confirm that the ready-light is on, then shoot.

Distance values that can be entered when performing Distance-priority manual flash operation (m/ft.)
tableF.gif
Choose an appropriate flash shooting distance from the table above. If a desirable distance value is not found in the table, use a shorter distance. For example, if the desired shooting distance is 2.7m (8.9 ft.), set 2.5m (8.2 ft.) on the LCD panel.

MflashOUT.gif
Beyond the flash-shooting distance range warning In distance-priority manual flash operation, the distance exceeding the available flash shooting distance range cannot be displayed on the LCD panel. Therefore, if the available distance range is shifted by changing the ISO sensitivity, aperture, or zoom-head position after you have set the shooting distance and aperture, the farthest (or closest) available flash shooting distance value is highlighted with an arrow pointing toward the available flash shooting distance range.

icon-M.gif Manual flash In Manual flash photography, you select the aperture and flash output level. In this way, you can control the exposure and flash shooting distance when shooting subjects where the correct exposure is difficult to obtain in the TTL or Non-TTL auto flash mode. The flash output level can be set from M1/1 (full output) to M1/128 to match your creative preferences.

MflashA1.gif MflashA2.gif MflashA3.gif MflashA4.gif MflashA6.gif MflashA5.gif

1 Set the cameraís exposure mode to Aperture-Priority Auto (A) or Manual (M). 2 Press the button until icon-M.gif appears on the LCD panel. 3 Determine the flash output level and aperture to match the flash shooting distance. 4 Press the iconSEL.gif button to highlight the flash level display, then press the or iconminus.gif button to increase or decrease the values. Note: for cameras compatible with CLS, digital SLRs not compatible with CLS, and in Groups I and II with CPU lenses, set the SB-800ís aperture on the camera. You cannot set the aperture on the SB-800 directly. For other camera/lens combinations, press the iconSEL.gif button to highlight the aperture display, then press the or iconminus.gif button to increase or decrease the aperture value. If the ISO sensitivity is correctly set, the flash shooting distance appears on the LCD panel, matching the flash output level and aperture as set.. 6 Set the same aperture on your camera or lens that is set on the SB-800. With cameras in Groups III to VII. 7 Confirm that the ready-light comes on, then shoot.

Setting the flash output level Press the iconSEL.gif button to highlight the flash output level display. The flash output level changes every time you press the or iconminus.gif button as shown below.
When you press the iconminus.gif button: MequationA.gif   Note: The numbers in parentheses represent the adjustable flash output level in ±1/3 steps except between 1/1 and 1/2. Therefore, 1/32 (-1/3) and 1/64 (+2/3) represent the same flash output level. To extend the flash shooting distance, choose a flash output level close to M1/1.
When you press the button: MequationB.gif  

iconRPT.gif Repeating flash In Repeating flash operation, the SB-800 fires repeatedly during a single exposure, creating stroboscopic multiple-exposure effects. This operation is useful when shooting fast-moving subjects. In this operation, appears on the LCD panel. Be sure to use fresh or fully charged batteries and allow enough time for the flash to recycle between each repeating flash session. Also, it is recommended to use a tripod to prevent camera/flash shake, because slower shutter speeds are used.

Maximum number of repeating flashes per frame:
tableRPTa.gif
Setting the flash output level, the frequency (Hz), and the number of repeating flashes per frame a) Frequency (Hz) represents the number of times the flash fires per second) The actual number of repeating flashes per frame becomes lower than the one set as the shutter speed increases or the number of flashes per second decreases, because the Speedlight fires during a single exposure. Referring to the table below, set the flash output level, the frequency, and the number of repeating flashes separately for each picture.

Operation: 1 Set the cameraís exposure mode to Manual (M). Press the button to display iconRPT.gif. Press the iconSEL.gif button to highlight the flash output level display, then press the
or iconminus.gif button to increase or decrease the values. The available range of the flash output level is between 1/8 and 1/128. 4 Press the iconSEL.gif button. The flash output level is set, then the frequency display is highlighted. 5 Repeat the procedures above to set the frequency and the number of repeating flashes per frame. 6 Determine the guide number according to the flash output level and zoom-head position set, then calculate the correct aperture from the guide number and the shooting distance. Finally set this aperture on the SB-800. For cameras compatible with CLS, digital SLRs not compatible with CLS, and cameras in Groups I and II with CPU lenses, set the SB-800ís aperture on the camera. You cannot set the aperture on the SB-800 directly. If the ISO sensitivity is correctly set, the flash shooting distance appears on the LCD panel, matching the flash output level and aperture as set.

RPTa.gif RPTb.gif RPTc.gif RPTd.gif RPTe.gif  

RPTf.gif RPTg.gif RPTh.gif RPTi.gif   Note: Many other Nikon Speedlight uses this iconRepeat.gif icon. The CLS-ready series changes it to iconRPT.gif .

7 Set the same aperture on the camera or lens that is set on the SB-800. With cameras in Groups III to VII 8 Set the shutter speed. Use the equation to determine the shutter speed and use that shutter speed or one slower. Shutter speed = Number of flashes per frame ÷ Frequency of flashes (Hz) For example, if the number of flashes per frame is 10 and frequency is 5 Hz, divide 10 by 5 to get a shutter speed of 2 sec. or slower. Or you can set the shutter speed to B (bulb) to accommodate any number of repeating flashes. 9 Confirm that the ready-light is on, then shoot.

WARNING: Do not exceed the maximum number of continuous firings You should allow the SB-800 to cool off for at least 10 minutes after the maximum number of continuous firings are performed as shown in the table below (left). Synchronization during continuous flash shooting It is possible to take up to the number of frames during continuous shooting as shown in the table below. However, if the continuous firings exceed the maximum numbers as shown in the table above, you should allow the SB-800 to cool off for at least 10 minutes.

RPTK.gif

Max. number of continuous firings:-
RPTJ.gif

<<< -- Maximum number of frames during continuous flash shooting (at six frames per sec.). With fresh batteries of the same type in both the SB-800 and optional Nikon SD-8A or Power Bracket Unit SK-6.

Exposure compensation and flash output level Exposure compensation allows you to take well-balanced pictures by intentionally modifying the flash exposure. This is useful when a subject of extremely high or low reflectivity is included in the scene or when you want to create flash photographs to match your creative preferences. Some plus compensation may be necessary when the background includes a mirror, white wall, or other highly reflective surface.

tableCompen.gif
Likewise, some minus compensation may be required when the background is dark or includes subjects of low reflectivity. Making exposure compensation for both the main subject and background, the main subject only without affecting the background, or the background only without affecting the main subject are possible, depending on the flash shooting situation. Exposure compensation on the SB-800 can be performed in these ways:

Making exposure compensation for both the main subject and background In TTL auto flash mode and Auto Aperture flash operation Use the cameraís exposure compensation function to modify both the SB-800ís flash output level and the background exposure. The exposure compensation value set on the camera is not displayed on the SB-800ís LCD panel. Exposure compensation beyond the usable ISO sensitivity range cannot be performed. For example, with an ISO sensitivity of 100, if you try to make an exposure compensation of +3 steps on the camera (equivalent to ISO 12), which is out of the usable ISO sensitivity range (ISO 25-1000) of the SB-800. In this case, exposure compensation up to +2 steps (equivalent to ISO 25) is possible.

Making exposure compensation in Non-TTL auto flash and Manual flash operations Exposure compensation is performed by intentionally modifying the correct aperture. In the Non-TTL auto flash mode, the correct exposure can be obtained when the same aperture is set on the camera as that set on the SB-800. Therefore, to make exposure compensation, vary the aperture set on the camera while retaining the aperture set on the SB-800 or vice versa. In the Manual flash mode, calculate the proper aperture for the correct exposure from the guide number and the shooting distance. Then, use a larger or smaller aperture on the camera to make exposure compensation. As a basic guide, set a wider aperture on the camera or lens to make the main subject brighter or a smaller aperture to make it darker.

Making exposure compensation for the main subject only: - In TTL auto flash mode and Auto Aperture flash operation Making exposure compensation for a flash illuminated main subject without affecting the background exposure by adjusting the SB-800ís flash output level is called flash output level compensation. This compensation can only be performed with cameras compatible with CLS, digital SLRs not compatible with CLS, and cameras in Groups I to III. In Manual flash mode Making exposure compensation for only the flash illuminated subject by intentionally modifying the SB-800ís flash output level (M1/1 to M1/128) Applicable for Nikon cameras in all groups.

Making exposure compensation for the background only Set the cameraís exposure mode to Shutter-Priority Auto (S) or Manual (M), and set the shutter speed to one slower than its flash sync shutter speed. With cameras providing slow-sync, set the cameraís flash sync mode to Slow-sync to bring out background details in low-light situations.

Flash output level compensation

You can make exposure compensation for the flash illuminated subject without affecting the background exposure by modifying the SB-800ís flash output level. Available in TTL auto flash mode, Auto Aperture flash and Distance-priority manual flash operations. In the TTL auto flash mode or Auto Aperture flash operation, flash output level compensation is only available with cameras compatible with CLS, digital SLRs not compatible with CLS, and cameras in Groups I to III. With F-601/N6006 and F-601M/N6000 cameras, make flash output level compensation on the camera. Flash output level compensation cannot be made on the SB-800. The amount of compensation set on the camera does not appear on the SB-800ís LCD panel. For details, see your cameraís instruction manual. With F80-Series/N80-Series, F70-Series/N70, and Pronea 600i/6i cameras having an exposure compensation function, you can compensate the flash output level on either the camera or the SB-800. For details, see your cameraís instruction manual. If you use both controls, the exposure is modified by the sum total of both compensation values. In this case, the SB-800ís LCD panel shows only the compensation value set on the SB-800.

compenA.gif compenB.gif   Operation: 1 Press the SEL button to highlight the Flash output level compensation value. 2 Press the + or --- button to increase or decrease the compensation in 1/3 steps from -3.0 to +3.0 EV. 3 Press the SEL button. The highlighted flash output level compensation value returns to normal display. The last highlighted number is the one automatically set.

Canceling flash output level compensation The flash output level compensation cannot be canceled by turning the SB-800 off. To cancel, press the + / --- button to return the compensation value to ì0î.

iconslowsyncSML.gif Slow-sync flash The flash is controlled at a slow shutter speed to obtain the correct exposure for both the main subject and background in low-light situations or at night. This mode is available with cameras providing slow-sync. You cannot set the slow-sync function on the SB-800 directly, but must set it on the camera. Note: Since slow shutter speeds are normally used, use of a tripod is recommended to prevent camera shake.

redeyeA.gif
Red-eye reduction To prevent the center of your subject's eyes from appearing red in color pictures, the SB-800 fires three flashes at reduced output just before the picture is taken. Available with cameras having Red-Eye reduction control. You cannot set Red-Eye reduction on the SB-800 directly, but must set it on the camera. Note: After setting your camera to Red-Eye reduction, make sure that ìicon-redeye.gifî appears on the SB-800ís LCD panel.

Red-Eye reduction with slow-sync flash mode In this mode, Red-Eye reduction is combined with slow sync. This mode is available with cameras having Red-Eye reduction with slow-sync. You cannot set this mode on the SB-800 directly, but must set it on the camera. Note: After setting your camera to Red-Eye reduction with slow sync, make sure that ìicon-redeye.gifî appears on the SB-800ís LCD panel. Since slow shutter speeds are normally used, use of a tripod is recommended to prevent camera shake.

iconRearsynSML.gif Rear-curtain sync In normal flash photography, when shooting fast-moving subjects at slow shutter speeds, unnatural-looking pictures can occur, because the subject frozen by the flash appears behind or within the blurred movement (see photo below right). Rear-curtain flash sync creates a picture in which the blur of a moving subject (for example, the taillights of a car) appears behind the subject and not in front. Note: In front-curtain sync, the flash fires immediately after the front curtain opens completely; in rear-curtain sync, the flash fires just before the rear curtain starts to close. This feature is available with cameras providing rear-curtain sync. You cannot set this mode on the SB-800 directly, but must set it on the camera. Since slow shutter speeds are usually used, use a tripod to prevent camera shake. This function does not operate in Repeating flash operation. In multiple flash, the master flash unit can be set to either front-curtain or rear-curtain sync flash. However, the remote units cannot be set to rear-curtain sync flash

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Nikon AF-TTL Speedlight DX-Series:
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