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Nikon D4 with AF-S VR Nikkor 300mm + 1.4x TC Lens Calibration Test Information


Test Information


Property Description
Data Creation FoCal Version
Data Analysis FoCal Version 2.6.5M
OS Version OS X 10.11.6
Source Mode Camera Mode
Image Capture Mode JPEG
Analysis Method Multi-ESH (RGB)
Camera Model D4
Firmware Version V1.10
Serial Number 2043388
Shutter count (start) 40607
Test Colour Temp 5200K
Lens AF-S VR Nikkor 300mm f/2.8G IF-ED II + 1.4x TC
Focal Length 420mm
Termination Reason Success
Test Aperture f/4.0
Test ISO 2000
Defocus Method Large defocus away from the camera
Distance to Target 8.9m to 10m
Starting AF Fine Tune +20
Tested AF Fine Tune Range Full (-20 to 20)
AF Fine Tune Step Size Auto
AF Consistency Constraint 6%
Total Shot Count 21
Calculated AF Fine Tune -12
Result Confidence Acceptable
Consistency of Focus 97.8%

Test Details 

Lens Profile Chart

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.


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


Nikon D4 with AF-S VR Nikkor 300mm + 1.4x TC Lens Calibration Test Information



Before/After Comparison

  AF Fine Tune
Before +20
After -12