[K.S.]

我聽好多師兄都話買左支鏡之後要去cal鏡，
所以好想知道係咪新鏡最好去cal下呢，咩野情況先要咁做？

謝！

[swhsimon]

1. In my case, even CANON Red Lens will out focus with my camera

No matter , how I focus. it is not clear

So, it need to cal and match with the Body !


2. If you use MK2 , inside has a Function to Cal your Lense with your Body.
Not Good but better than NONE .

3. If you want to know whether you lense is Accuracy or Not .
a. I put a Ruler on a Hard White paper , in the Middle of Make a Red Line
on the Paper
b. Make the Paper 45 degree with the Table
c. Lock your camera on the Table and focus on the Red Line
d. Take a Picture by Auto Focus
e. Check Picture in the PC
f. If Middle Mark of Ruler on the Red Line is Clear then ,focus is good
if the Back or Front side is clear , then the Auto Focus has problem

[swhsimon]

By the way it Not such a Internal Cal function in your camera.
Just say sorry to you !
or take it back to the seller .