Yashica Auto Yashinon-DX 300 mm f/ 5.6 Lens Brochure

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MANUAL INSTRUCTIONS 
 
MC ZENITAR-M 2.8/16 fish-eye lens
 
 
Purpose
 
 
 
The MC ZENITAR-M 2.8/16 fish-eye lens is a short-focus, super wide-angle, compact lens intended for reflex 
cameras with M42X1 lens fitting and 24X36 mm frame size, as an interchangeable lens. 
It is irreplaceable when taking pictures with a large field of view, such as architecture, landscape as well as 
group scenes. 
The lens should be used for shooting on black-and-white, color and infrared films. 
It is intended for use at a temperature of -15 to +45°C.
 
Specifications
 
 
 
Focal length ........................ 16 m
Relative aperture 
maximum ............................. f/2.
minimum .............................. f/22
Angular field of view 
(to the frame diagonal) ........... 18
Flange/film distance ........….... 4
Number of elements/groups ...... 
Lens fitting thread ....................M
Light filter mounting 
thread ................................ M26.
Minimum taking distance .......... 
Lenght of the lens set on 
¥
 
without caps (from the base 
face) ..................................... 49 m
Maximum diameter 
of the lens mount...................... 6
Weight without caps................ 0.
 
0° 
5.5 mm 
11/7 
42X1 
5X0.5 
0.3 m 
3 mm 
31 kg
 
Pre-starting Procedure
 
 
 
Before mounting the lens on to the camera remove the lens rear cap. Make sure of the light filter compensator 
4 (a clear glass plate in holder, screwed into the lens) being mounted on the lens. 
Set the ring with distance scale on “
¥
”. Carefully screw the lens into the camera as far as it will go. In so doing 
central index mark 6 of fixed ring 3 will come along the camera vertical axle. 
If you are going to shoot with a light filter, unscrew the light filter compensator 4 and replace it with a light 
filter you have selected screwing it into the lens as far as it will go. Shooting over, replace the light filter with 
the compensator screwing it into the lens as far as it will go.
 
Operating Procedure
 
 
 
Before taking pictures remove the lens front cap. 
Set the selected aperture on scale 2 against central index 6 on fixed ring 3. By rotating ring 1 focus the lens at 
the object to be photographed so that the image will be sharp in the view-finder. Focusing should be done at 
fully open diaphragm. On pressing the camera release button the lens automatic diaphragm will close down to 
a selected aperture and the shutter will fire. Shutter firing over, the diaphragm will restore to initial position. 
When photographing groups of objects in different distances from the camera, make use of depht-of-field scale 
3. Index marks on the depht-of-field scale, corresponding to the set aperture value, will indicate sharp image 
limits on the distance scale 1. 
For instance, with the lens focused at 0.4 m and an aperture of 11 the image will be sharp within the range 
from 0.3 to 0.6 m.