Sony SEL16F28 Adjustment Manual page 4

7. To change the zoom position with the zoom lens, set the zoom position to the specified value.
Manual zoom: Set the zoom position manually.
Motorized zoom: Set the focal length and zoom speed from the lens adjustment program, and click [Zoom(Focal Dist.)].
(If a time-out error occurs, increase the zoom speed.)
Select focal length Enter focal length (Select " Input " from the left pull-down menu.)
Execute zoom Select zoom speed
Fig. 2-2-4
8. Set the projection distance of the lens projector to the specified value for each model.
Note:
For the projection distance, refer to the service manual of each model.
9. Bring the projector into focus so that fine lines of the center projected image (y ʼ = 0) on the screen can be clearly seen as much as pos-
sible by operating the program screen.
y' = 0 6 9 12 18
25
40 32
63 80 100 125 160
50
The number represents for lines per mm. Saggital (S)
Meridional (M)
Fig. 2-2-5
E-MOUNT LENS GENERAL ADJUSTMENT GUIDE
Focus Setting:
Note:
The focus setting buttons vary with model. Refer to the following figure for selecting either of the buttons.
Use for except above models
Fig. 2-2-6
(1) Select " JOG " from the focus menu for the relevant model.
(2) Clicking [Focus] or [Focus(Target Dist.)] displays the focus JOG operation window.
Select focus step value
Select and enter
focus step speed
Focus drive (near)
Fig. 2-2-7
(3) Adjust the focus position with [Near] and [Far] while selecting " Focus Step " and " Low " / " Mid " / " High " , and then click [OK] to close
the focus JOG window.
10. Read the value of the number of projective resolving power lines (maximum resolving power) of the center projected image (y ʼ = 0).
11. Read the value (the number of projective resolving power lines) of the thinnest line (resolution limit) that allows recognition of contrast
of the saggital (S) image and meridional (M) image (three lines) of the peripheral projected image (y ʼ = 6, 9, 12, etc.).
Note 1:
The measurement position varies with model. Refer to the service manual of each model.
Note 2:
Be careful of spurious resolution when checking the resolution limit.
Spurious resolution is a phenomenon where fine lines beyond resolving power are visible as black and white stripes as if resolution is made.
In this case, black and white of three stripes are reversed and seen as if they are two or four lines in some cases. Be careful not to confuse
this phenomenon with the resolution limit.
Correct resolution Spurious resolution
Fig. 2-2-8
– 4 –
Use for below models only
- SEL16F28
- SEL1855
Check off
- SEL18200
Focus position indicator
Focus drive (far)