Nikon Speedlight Gebrauchsanweisung - Seite 14

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S H O R T - R A N G E A N D C L O S E - I ' J P

For example, if the Nikkor Auto 50mm f/2 lens is

used with film of ASA 25 at distance of 364mm

measured from the film plane using the extension

ring K-l, the table shows f/11 as the correct aperture.

The Exposure Calculating Diagram is based on expo-

sure i n d e xes f or A S A s pee d 2 5 at l/ 4 re d uc ed po w er '

For combinations other than ASA 25 film at Il4

output, use the f-number indicated by the Exposu

Calculating Diagram and add or subtract the exposure

factor indicated in the table below for the combi-

nation in use.

Note: Use the f-number engraved on the lens aperture ring.

not the effective number for close distances since the tablc

and diagram accommodate the lens extension.

F o r s u b j e c t s c l o s e r t h a n 0 . 2 m , u s e o f t h e M a c r o R i n g l i g h t

U n i t S M - 1 i s r e c o m m e n d e d .

Exposure Factors for Film Speed (ASAI

A s s L m e d a s a s t a n d a r d ( - 1 ) f o r t h e l r g h t o u t p u t 1 / 4 a n d t h e f i l m s p e e d

A S A 2 5

F i l m

speed

( A S A }

=-'-

t*toT

L i g h t o u t p u t F U L L

L i g h t o u t p u t 1 / 4

1/4X (Decreasa 2 stopsl

1 X

1/5.2X (Decrease 2-113 stoPs)

1/1.3X (Decrease 1/3 stopl

1/8X (Decrease 3 stops)

1/2X (Decreasa I stopl

1/10.4X (Decrease 3-1/3 stopsl

1 / 2 . 6 X ( D e c r e a s o l - l / 3

s t o p s ,

100

1/16X (Decrease 4 stopsl

1/4X (Decrease 2 stoPsl

125

1/20.8X (Decrease 4-113 stopsl

1/5.2X (Decrease 2-113 stoPs)

160

1125.6x (Decrease 4'2l3 stoPs)

1/6.4X (Decrease 2'213 stoPsl

Exposure Calculating Diagram

( S u b j e c t d i s t a n c e = 2 0 O m m - 6 O 0 m m )

f - n r r b " t - _ -

A S A 2 5 L i g h t o u t p u t 1 / 4

L f i G [ - I T I N G

5 0 0

4 0 0

3 0 0

20c

€