ISO sensitivity factors

Flash modes and functions

Determining the aperture, flash output level and shooting distance

In Distance-priority, Manual and Repeating flash modes, 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.

For sensitivities, multiply the guide number by the factors shown in the table below.

ISO	25	50	100	200	400	800	1600	3200	6400

Factors	0.5	0.71	1	1.4	2	2.8	4	5.6	8

Guide number (GN at ISO 100; m/ft)

The table below shows the guide numbers while using the standard illumination pattern when the SB-900 is mounted on a Nikon FX format camera.

• For others, see “Specifications” (kF-18).

Flash							Zoom position (mm)
output		14mm		17	18	20	24	28	35	50	70	85	105	120	135	180	200
level	WP +	BA	WP
	BA
1/1	13/	16/	17/	22/	23/	24/	27/	30/	34/	40/	44/	47/	49.5/	51/	51.5/	54/	56/
	42.7	52.5	55.8	72.2	75.5	78.7	88.6	98.4	111.5	131.2	144.1	154.2	162.4	167.3	169.0	117.2	183.7

1/2	9.1/	11.3/	12/	15.5/	16.2/	16.9/	19/	21.2/	24/	28.2/	31.1/	33.2/	35/	36/	36.4/	38.1/	39.5/
	29.9	37	39.3	50.9	53.1	55.4	62.3	69.6	78.7	92.5	102.0	108.9	114.8	118.1	119.4	125.0	129.6

1/4	6.5/	8/	8.5/	11/	11.5/	12/	13.5/	15/	17/	20/	22/	23.5/	24.7/	25.5/	25.7/	27/	28/
	21.3	26.2	27.9	36.1	37.7	39.3	44.3	49.2	55.8	65.6	72.2	77.1	81.0	83.7	84.3	88.6	91.9

1/8	4.5/	5.6/	6/	7.7/	8.1/	8.4/	9.5/	10.6/	12/	14.1/	15.5/	16.6/	17.5/	18/	18.2/	19/	19.7/
	14.8	18.8	19.7	25.3	26.6	27.6	31.2	34.8	39.3	46.3	50.9	54.5	57.4	59.0	59.7	62.3	64.6

1/16	3.2/	4/	4.2/	5.5/	5.7/	6/	6.7/	7.5/	8.5/	10/	11/	11.7/	12.6/	12.7/	12.8/	13.5/	14/
	10.5	13.1	13.8	18.0	18.7	19.7	21.9	24.6	27.9	32.8	36.1	38.4	40.4	41.7	42.0	44.3	45.9

1/32	2.2/	2.8/	3/	3.8/	4/	4.2/	4.7/	5.3/	6/	7/	7.7/	8.3/	8.7/	9/	9.1/	9.5/	9.8/
	7.2	9.2	9.8	12.5	13.1	13.8	15.4	17.4	19.7	23.0	25.3	27.2	28.5	29.5	29.9	31.2	32.1

1/64	1.6/	2/	2.1/	2.7/	2.8/	3/	3.3/	3.7/	4.2/	5/	5.5/	5.8/	6.1/	6.3/	6.4/	6.7/	7/
	5.2	6.6	6.9	8.9	9.2	9.8	10.8	12.1	13.8	16.4	18.0	19.0	20.0	20.7	21.0	21.9	23.0

1/128	1.1/	1.4/	1.5/	1.9/	2/	2.1/	2.3/	2.6/	3/	3.5/	3.8/	4.1/	4.3/	4.5/	4.5/	4.7/	4.9/
	3.6	4.6	4.9	6.2	6.6	6.9	7.5	8.5	9.8	11.5	12.5	13.5	14.1	14.8	14.8	15.4	16.1

•BA: With the Nikon Diffusion Dome attached

•WP: With the wide-flash adapter in place

D–22

SB-900 specifications

The Univex SB-900 is a state-of-the-art commercial mixer designed to meet the diverse needs of kitchens that require efficiency and versatility. Built with commercial-grade materials, this mixer is ideal for bakeries, restaurants, and catering services. One of its key features is its powerful motor, which allows the SB-900 to effortlessly handle a wide range of mixing tasks, from kneading bread dough to whipping cream.

A standout characteristic of the SB-900 is its sleek and robust design. Constructed with stainless steel, it not only provides durability but also ensures easy cleaning and maintenance. This high-quality build makes the mixer resilient against the rigors of daily kitchen use while also enhancing its aesthetic appeal.

The SB-900 comes equipped with a variety of attachments, including a whisk, dough hook, and flat beater, making it adaptable for different recipes and tasks. These attachments are designed to work harmoniously with the mixer's powerful motor, ensuring consistent results whether mixing batters, doughs, or sauces. The bowl lift mechanism allows for easy adjustments to accommodate different bowl sizes, optimizing the mixing process.

Another significant feature of the Univex SB-900 is its user-friendly controls. With a simple interface, operators can easily adjust the mixing speed to suit their needs. The mixer offers multiple speed settings, providing the flexibility to achieve the desired consistency without overmixing, thus preserving the quality of ingredients.

Safety is also a priority in the design of the SB-900. It includes built-in safety features such as a motor overload protection system, which helps to prevent damage to the mixer and ensures safe operation. These safeguards make it a reliable choice for busy kitchens.

Furthermore, the Univex SB-900 is designed for ease of use. The easy-to-remove bowl and attachments facilitate quick changes between tasks, enhancing productivity in a fast-paced environment. The mixer’s compact design ensures it fits easily on countertop spaces while still providing ample mixing capacity.

Overall, the Univex SB-900 stands out as a versatile and reliable mixer, equipped with advanced technologies and features that cater to the demands of modern culinary professionals. Its combination of power, durability, and user-friendly design makes it an essential tool for any commercial kitchen aiming for efficiency and high-quality food preparation.

Univex SB-900 user manual ISO sensitivity factors, Guide number GN at ISO 100 m/ft

Models: SB-900