Nikon F25B manual Focusing Screen Selector Chart

Focusing Screen Selector Chart

=Excellent =Acceptable

The image is brilliant from edge to

edge, but the central rangefinder, micro prism or cross-hair area is dim. Focus on the surrounding ' matte area.

•=Acceptable

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Slight vignetting or moire phe- nomenon (in the case of the microprism) affects the screen image. But the image on film shows no traces of th is.

•=Acceptable

Incompatible with any lens having a maximum aperture larger than f/2.8 since thi s decreases the ef- ficiency and accuracy of the screen rangefinder. The in-focus image in the central spot may prove to be slightly out of focus on film. Focus on the surrounding matte area .

Caution : The rear surface of the sc reen is made of acry l resin. Special care should be taken to protect it from scratching or ex- cess ive pressure .

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