Testing lens accuracy

How do you test if your lenses focus is correct? I have tried to find some info and by the end of reading te info it says its not accurate.

I use Focal: http://www.reikan.co.u​k/focalweb/

Africanphoto wrote in post #15365304
How do you test if your lenses focus is correct? I have tried to find some info and by the end of reading te info it says its not accurate.

How can you read something and figure out your lens is not correct? You need to shoot and test it.

When you say "lens focus" are you talking about the auto focus? If so, you can micro adjust your lens if your body has that feature. I use a tool like LensAlign to micro adjust my lenses.

Well, if I wanted to wander into the murky world of measurebation I'd probably start with the Sticky at the top of this forum - What to do if you suspect a focus problem with your DSLR=-