Nikon 85mm-f-28D-PC-E-Nikkor: 9. Depth of field 10. Focusing at a predetermined reproduction ratio 11. Notes on close-up photography and duplication work

9. Depth of field

Depth of field scale

• Approximate depth of field can be

Distance index

󱤨

determined by checking the depth of

field scale.

En

•

Using the aperture stop-down button

of the lens or the camera’s depth-of-

field preview (stop-down) button (with

the D3 or D300 camera), the depth of

field can be observed while looking

through the camera viewfinder.

• For more information, see p. 248.

Fig. 11

Note: When the lens is tilted, neither

the depth of field scale nor the distance scale can be used.

(Both scales can be used when the lens is shifted only.)

10. Focusing at a predetermined reproduction

ratio

The reproduction ratio is the relation between the size of 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 248.

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.

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