Nikon PC-E Micro NIKKOR 85mm f/2.8D Manuel D'utilisation page 34

10. Focusing at a predetermined
reproduction ratio
The reproduction ratio is the relation between the size of
En
the image recorded on film and the actual subject size. If,
for example, the image on the focusing screen is one-fifth
the actual subject size, the reproduction ratio is 1:5.
To obtain the appropriate reproduction ratio for each
focused distance, see the table on page 260.
11. Notes on close-up photography and
duplication work
Camera shake
The PC-E Micro NIKKOR 85mm f/2.8D provides such
exceptionally high image magnification that even the slightest
movement during shooting can cause the image to blur. Be
sure to mount the camera on a tripod and use a cable release
or remote cord to release the shutter.
Close working distance
At the high reproduction ratios used in close-up shooting,
the depth of field is very shallow. To ensure greater depth of
field, stop down the lens, then carefully position the camera
to ensure the most important surface of the subject is in the
same zone of sharp focus.
12. Taking flash pictures using cameras with
a built-in flash
To prevent vignetting, do not use a lens hood. Moreover
take pictures at a shooting distance of 0.6 m or further.
Note: When using the camera's built-in flash for tilt/shift
shooting, vignetting will be greater than shooting
without tilt/shift. For tilt/shift shooting, use of
camera's built-in flash is not recommended.
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