Nikon 1909 Instruction Manual - Page 14
Depth of Field, Minimum Aperture Lock Fig. 3, Recommended Focusing Screens
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Depth of Field If your camera has a depth of field preview (stop-down) button or lever, depth of field J can be observed while looking through the camera viewfinder. Minimum Aperture Lock (Fig. 3) For programmed auto or shutter-priority auto exposure shooting, use the minimum aperture lock lever to lock the lens aperture at f/32. E 1 Set the lens to its minimum aperture (f/32) by aligning it with the aperture index. 2 Slide the lock lever toward the aperture ring, so the two orange dots are aligned. To release the lock, slide the lever in the opposite direction. Recommended Focusing Screens G Various interchangeable focusing screens are available for certain Nikon SLR cameras to suit any picture-taking situation. The ones recommended for use with this lens are: F Screen Camera AB C D E EC-B EC-E F G1 G2 G3 G4 H1 H3 H2 H4 J R K LM P S U T F5+DP-30 ʕ ˕ F5+DA-30 ʢʣ ʕ ˕ ʕ ʕ ˕ S F4+DP-20 ʢʣ ʢ ʣ F4+DA-20 F3 IT ˕ Excellent focusing ˓ Acceptable focusing Slight vignetting or moiré patterns appear in the viewfinder, but not on the film. ʕ Not available. ( ) Indicates degree of exposure compensation needed (Center-Weighted metering only). Ck Blank box means not applicable. Since type M screen can be used for both macrophotography at a 1:1 magnification ratio and for photomicrography, it has different applications than other screens. When using the B, B2, E, E2 and K2 focusing screens in cameras other than those listed above, refer to the columns for the B, E and K screens. Ch 14