How to test the lens (back focus)

Hello guys,

How to test the lens (back focus problem)?
My D60 has 3 focus points and those focus seem have problem.

Thx

In this Canon forum, do a search for "ruler test", then read those items.

---Bob Gross---

https://photography-on-the.net/forum/showthre​ad.php?t=10526

Hi robertwgross and Pekka,

thank you your info.

when i using the 200m L 2.8 , the image was very sharp. But when I using the 24-70mm L 2.8 on my D60 (L, C, R focus point) , the image seem not very sharp.

I don't the problem is from the D60 or 24-70mm L 2.8 lens
If the lens has a problem, will Canon fix it ?

A Canon Service Center is capable of repairing most Canon products, whether lens, camera body, flash, or whatever. Sometimes a user sends in the camera body to be repaired, and Canon can't repair it because there was nothing wrong with it, and maybe the problem was actually in the lens. If the Canon items are under Canon warranty, then the repair cost is handled by them. If the Canon items are only under a vendor warranty, then you are better off sending them to the vendor for repair. If the Canon items are not under warranty at all, then you will have to pay Canon for repair work.

---Bob Gross---