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Lens Calibration for Canon EOS 5D Mark IV with EF300mm f/2.8L IS II USM - Test Information

Test run on: 26/09/2018 10:57:47 with FoCal Report created on: 26/09/2018 11:05:10 with FoCal 2.6.5M


Property Description
Data Creation FoCal Version
Data Analysis FoCal Version 2.6.5M
OS Version OS X 10.13.6
Source Mode Camera Mode
Image Capture Mode JPEG
Analysis Method Multi-ESH (RGB)
Camera Model Canon EOS 5D Mark IV
Firmware Version 1.0.4
Serial Number XXXXXXXX
Camera Temperature 27C
Test Colour Temp 5200K
Lens EF300mm f/2.8L IS II USM
Focal Length 300mm
Termination Reason Success
Test Aperture f/2.8
Test ISO 1000
Defocus Method Large defocus away from the camera
Distance to Target 7.6m to 7.7m
Starting AF Microadjustment 0
Tested AF Microadjustment Range Full (-20 to 20)
AF Microadjustment Step Size Auto
AF Consistency Constraint 6%
Total Shot Count 14
Calculated AF Microadjustment -3
Result Confidence Excellent
Consistency of Focus 99.4%

The Lens Profile chart shows how the image quality changes as the AF Microadjustment changes. The orange line represents how the sharpness is expected to change through all values, so the highest point on this line corresponds to the best predicted AF Microadjustment value.

Lens Profile Chart

Test Details


Each point on the chart represents the result of a single shot:


  • Red marker: unoptimised sharpness
  • Green marker: optimised sharpness
  • Orange circle within marker - this is the representative sharpness for this AFMA
  • Orange curve - the predicted sharpness across the AFMA range
  • Green triangle - highest value
  • Red triangle - lowest value


Lens Calibration for Canon EOS 5D Mark IV with EF300mm f/2.8L IS II USM - Test Information

Before/After Comparison




Before 0
After -3