AF Microadjustment: checking sharpness

Since the EOS-1D Mark III many EOS models have featured the ability to perform AF microadjustment to ensure absolute perfect focus, especially after a bump or knock that may have caused a focus shift. When performing AF microadjustment, if you find it hard to tell the difference in settings, switch the camera from RAW to Large JPEG. This should help give you a little more detail in the images when reviewing them and will avoid any RAW sharpening later, in conversion on the computer.
Keywords:
Camera settings
Focusing