It's help an idiot day.

Hello.

My 85 1.2 is repeatably missing focus.
The part of the image/s that is in focus is always behind where I want focus.

Do I put a plus value or minus value into MFA to correct this?

My thanks in advance.

Help from an idiot. Go the direction that improves focus. ߘ

fordmondeo wrote in post #18398585
Hello.

My 85 1.2 is repeatably missing focus.
The part of the image/s that is in focus is always behind where I want focus.

Do I put a plus value or minus value into MFA to correct this?

My thanks in advance.

MINUS

Use FoCal commercial software, or do DotTune method. For the latter just go to Youtube, do a search for DotTune, and there is a great video instructions on how to do AF MA.

Positive values increases the distance between you and focus, negative values decreases that distance. This is how I remember it. No need for the 3rd party tools/software. You can use your yard or your sidewalk as a great focusing tool. Put a small contrasty object that your center AF point won't have an issue locking onto, and do some tests that way. You will be able to see where focus lies in relation to the object, and you can tweak from there.

It's like tuning a musical instrument. Change it - if it gets worse, change it in the other direction.