Professional photographer Karl Taylor has put together a short-but-very-useful tutorial that will show you how you can calibrate your lens autofocus without buying a special calibration chart or tool. All you need are a few household items, your camera, and your tripod.
When we finally pluck up the courage to purchase an expensive lens, we expect them to be perfect right? Unfortunately, no matter how good the lens is, there are always going to be minor differences when we attach it to our specific camera.
It’s fairly well known that not all lenses are created equal. Put that in combination with manufacturing variables and lenses don’t always perfectly align with the camera mount. Generally the differences are minor and for the most part negligible, but I buy old Minolta lenses from eBay and I want to get the best bang for buck out of them.
I started making micro adjustments to my lens/camera combinations when I first got Sony’s a77, and have now micro adjusted all my lenses for the a99 and D3. After reading what the Internet had to offer regarding “micro adjustment” or the “fine tune” functions higher level DSLRs offer, I quickly printed off some charts similar to rulers and taped them to my wall to start making adjustments.