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120 MACRO A F4 M Lens

English Instructions

Summary of Contents for 645

Page 1: ...120 MACRO A F4 M Lens English Instructions ...

Page 2: ...of its unique built in extension helicoid barrel the lens can be focused from infinity to life size reproductions 1 1 without any accessories The lens barrel design shields the front lens element from extraneous light sufficiently without requiring a lens hood however if desired you may use the Mamiya screw in hood M67 No 4 Names of Parts Specifications Construction 9 elements in 8 groups Angle of...

Page 3: ...Detaching the Lens from the Camera Body 1 Press the Lens Release Button 1 on the camera body in the direction of the arrow and then rotate the lens counterclockwise Magnification 1 Frame the subject through the viewfinder and then turn the Focusing Ring to obtain sharp focus 2 Read the MAG Scale aligned with red Index Mark located in the center of the Depth of Field Scale The MAG Number is a recip...

Page 4: ...he front frame of the lens to the subject With close up photography the lens extension is large and the amount of light reaching the film is reduced Therefore it is necessary to increase exposure When using an external light meter use the above table to determine the correct exposures If using an AE prism finder no exposure correction is necessary ...

Page 5: ...e values to the left and right of a central index o The Distance Scale shows the effective depth of field falling within any two matching values For example if the distance to the subject is two meters and the aperture setting is f 16 the Depth of Field Scale indicates that focus is sharp within a range of about 1 8 to 2 2 meters o The Depth of Field Table provides more precise depth of field rang...

Page 6: ...her chemical gasses Such gasses can damage the lens Clean the lens by wiping it with a soft dry cloth Never use solvents to clean the lens Doing so can cause discoloration of the lens finish If the lens surface becomes dirty or smudged with fingerprints gently wipe it with a piece of soft clean gauze If you have trouble cleaning the lens surface or if you discover mold forming on it contact your n...

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