[Rol]

Nikon also will out focus.

At low light, full open aperture, wide zoom end, each time focus point may have a bit difference, but at the tele end the focus is more accurate than wide end..

Below photo shot at such harsh condition by D200 on tripod, the focus point is different under same setting :

18-70 at 18 F3.5


18-70 at 18 F3.5 (2)


28-70 at 28 F2.8


28-70 at 28 F2.8 (2)

[无為]

師兄算吧喇，啲人都係認為走焦係私家專利設計。

[cwk36]

樓主提供這用間尺測試法又幾好喎！ THANKS !

[yatsugiri]

你張 focus card 似乎唔係 同個focal plane 一樣角度喎, 有少少向後傾斜. 而且咁多details係上面, 次次影都唔同 焦點好正常 =)

[kingkonghk]

向後傾斜唔緊要, 只要有用腳架, 主體冇移動過, 機冇移動過, 對焦次次對住個交叉中心

[jefftsefu]

Looking at your picture it seems they are wrongly focused more than 走焦

Should put the focus stamp in the centre.

[teddykwan]

4張相既位置都吾同.係試就正經d.

[阿莉]

會員戶口已被刪除，資料已被標示為不顯示

[kingkonghk]

你好彩冇買can0n, d人話can0n最大問題

[teddykwan]

<<請問各位,我都係用nikon原厰鏡,跟機買的,是否有問題的...請指教.... >>


看過妳post上來兩張相.應該冇問題.

[hanny]

................it is not too big problem

if think so serious than go get a free cs serives :>

[无為]

又可能用錯咗手動對焦掛。

[Rol]

4張相既位置都吾同.係試就正經d.

--------------------------

All photo were shot at SAME position without moving the DSLR nor the testing platform

You see the photo different position because I manually crop out the centre part of photo for your review.

[Rol]

你張 focus card 似乎唔係 同個focal plane 一樣角度喎, 有少少向後傾斜. 而且咁多details係上面, 次次影都唔同 焦點好正常 =)

-----------------------------------

They are at the same focal plane.

- The ruler is lying at 45 degree platform
- The focus card is stuck 90 degree perpendicular to ground level
- The DSLR on tripod is at same level of the focus card.
- Each time manually turn focus to infinitely, and refocus at focus card

[Rol]

Should put the focus stamp in the centre.

--------------------------------

The focus stamp is at the centre of photo, focus mode is single centre point.

because I crop out and enlarge the part of photo, so it look like not at centre point.