AMOUNT_LENS - Sony Digital Camera Service Manual (repair manual). Page 21

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LENS GENERAL ADJUSTMENT GUIDE
4. PROJECTIVE RESOLVING POWER CHECK
4-1.
Setting of Lens Test Projector
Equipment
• Lens Test Projector and Variable Transformer (Output voltage: AC 100 V)
Note:
Connect the variable transformer (Output voltage: AC 100 V) to the lens test projector.
• A-mount Attachment
• Screen (Art paper)
• Tape Measure
• Plane Mirror (For SLRs)
1. Preparations
Note:
For the projective resolving power of the checking lens, confirm the focal length and projected length described in the confirma-
tion of projective resolving power (Refer to the service manual of each model.)
1)
Perform the following steps (1) to (3), and incorporate the internal lenses of the lens test projector according to the checking focal-
length.
(1) Open the lid of the lens test projector.
(2) Pull up and turn the fixed levers on the right and left sides of the lens test projector.
(3) Remove or insert the lens.
Note:
Be sure to have the right position and direction of the lens.
Fig.4-1-1
Lens test projector
Incorporate of the lenses
according to the checking focal-length (f).
Lens
Fixed lever
Fixed lever
Lid
f=18 to 35 mm
f=35 to 100 mm
f=100 to 200 mm
f=200 to 300 mm
Heat-absorbing filter 
Chart
Chart
Chart
Chart
Filament
Filament
Filament
Filament
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