M301; Adj] Viewfinder Focus・Parallax; Parallax; Viewfinder Focus - Pentax ist D Service Manual

10. M301

① M301 (L5, L7, M302, 0-M307)
② TY-CNM1.7x4.5 (2pcs.)
11. [ADJ] Viewfinder Focus・Parallax
[Required equipment] Collimator, Focus master lens, Lens for checking (e.g. FA50mmF1.4)
[Preparation] Adjust the diopter by the diopter adjustment lever.

11-1. Parallax

[CAUTION] Confirm that the Pentaprism must be installed securely.
① Confirm there is neither gap nor an inclination at an upper and lower, right and left
position.
Standard: Right/Left 1°or less
② Adjust the parallax of right and left direction by the prism retainer screws (M16 x2).

11-2. Viewfinder Focus

[CAUTION] The focus must be adjusted at the center and corners in the viewfinder.
③ Adjust the focus to within ±0.02mm by turning the adjusting screws (M103 x3) as shown
in the figure below.
1
Standard: 0±0.07mm
[NOTE] One scale of the Focus master lens = 0.03mm
④ After adjustment is done, apply the screw lock agent to M16 and M103.
Top/Bottom 1°50'or less
2
3
[ [NOTE] Each adjusting screw affects the focus in the
76180 EM -20/73-
①
2
３
viewfinder as shown in the figure above.
②
1