Lenses with a maximum aperture smaller (higher f/number) than f/5.6 will cause the focusing screen’s microprism to darken.
Changing the Focusing Screen
The scales at the center and periphery help you compose shots for
Lenses with a maximum aperture smaller (higher f/number) than f/5.6 will not cause the focusing screen’s microprism to darken.
Use the cross hair at the center to focus. Suited for photomicrog- raphy and astrophotog- raphy.
Focus with the vertical and horizontal splits. Lenses with a maximum aperture smaller (higher f/number) than f/5.6 will cause the focusing screen’s split portion to darken.
focusing screen. | |
focusing screen. The |
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CIII logo is imprinted on |
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the lug to distinguish it |
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from the |
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Ideal for architectural | |
photography and photo | focusing screen. |
duplication work. |
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10
Reference
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