Did you google "AF microadjust". That's what it's called, not lens calibration. I don't have a 5d MkIII but in the 7D it is in the custom function menu. I assume it's the same on the 5D MkIII. The procedure is pretty much the same for all EOS bodies with AF microadjust capability.
. Canon EOS 5D Mark III Canon EF 35mm F1.4L USM Canon EF 50mm f/1.2L USM Canon EF 135mm F2L USM Tamron SP AF 90mm F/2.8 Di Macro +4 more Reply Reply with quote Reply to thread Complain Getting started with the 5D Mark III 7 Understanding the terms used in photography 8 What ISO means and controls 9 What shutter speeds mean and control 10 What the aperture does and controls 11 What the lens you use controls 12 Lens jargon and terminology 13 Explanation of sensor size 16. Basic camera layout . 17 New-to-me 5D mark III. Hey everyone, first post here! After getting intimately familiar with my Rebel T5 over the past 6 years, I feel like I've outgrown it. Looking for a full frame sensor to complement my L lenses, I've been tracking prices on newer bodies like the 6D mark II and the R8. However, when this popped up for $500 US, I jumped on With its fully-electronic lens mount, in-lens aperture and focus motors, and reliance on electronic button and dial operation, Canon's EOS system established a blueprint that all successive camera systems have followed. Now, 25 years later, the Canon EOS 5D Mark III is the latest model in the line. Canon EOS 5D Mark III Canon EF 100mm F2.8L Macro IS USM Canon MP-E 65mm f/2.5 1-5x Macro Canon EF 70-300mm f/4-5.6L IS USM Canon EF 24-105mm f/4L IS USM +4 more Reply Reply with quote Reply to thread Complain ZZwRayV.