Nikon 7MAA800-02 Manuel D’Utilisation

Page de 168
16
Jp
En
De
Fr
Es
Sv
Ru
Nl
Pt
Pb
It
Cz
Sk
Ro
Ua
Ck
Ch
Kr
Id
■ Reproduction Ratio
The reproduction ratio is the ratio of the apparent size of an 
object to its true size. If, for example, the image on the image 
sensor is one-third of actual size, the reproduction ratio is 1 : 3. 
If desired, the reproduction ratio can be selected using the 
reproduction ratio indicator.
Example: Using the Reproduction Ratio Indicator
To shoot at a reproduction ratio of 1 : 3, select manual focus 
and rotate the focus ring until the focus distance mark aligns 
with the number “3” in the reproduction ratio indicator, then 
move the camera forward or back until the subject is in focus.
■ Close ups and Reproduction Work
To prevent blur caused by camera shake, mount the camera 
on a tripod and use a cable release or remote cord. Close ups 
are generally associated with extremely shallow field depths; 
for greater depths of field, stop down the lens, choose longer 
exposure times, and position the camera so that the focal 
plane is parallel to the portion of the subject you wish to 
photograph. When using a lens hood, be careful that the 
hood does not touch the subject.
■ Exposure Factor
The lens f-number indicates the brightness of the subject at a 
focus distance of infinity; higher reproduction ratios result in 
reduced subject brightness. The actual brightness is referred 
to as the “effective f-number”, and the amount that exposure 
compensation has to be raised to account for the loss in 
brightness as the “exposure factor”.