Sony SAL135F28 Service Manual page 59

Lens for dslr camera 135mm f2.8 [t4.5] stf

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4-2-2. Aperture Diameter Adjustment

Equipment

• Adhesive bond (B-10)

Adjustment Method

Remove the 1 group lens block.

Set the stepless aperture (M aperture) of the checked lens to the fully open state (set the index of the stepless aperture to "A"), and

check that the M iris feathers do not remain in aperture.

Remove the adhesive bond of the three screws fixing the iris retainer tube.

M Iris Retainer Tube

SAL135F28 (STF 2.8(T4.5)/135) (135mm F2.8 [T4.5] STF)

1 Group Lens Block

Fig.4-2-9

Aperture Hold Ring

Fig.4-2-10

4-17

Adjustment Screws

for Aperture Diameter

(Three areas)

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