Canon EOS 7D Mark II with EF-S18-55mm f/3.5-5.6 Lens Calibration Test Information

Overview

Test Information

 

Property Description
Data Creation FoCal Version 2.6.5.3996M
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 Canon EOS 7D Mark II
Firmware Version 1.1.2
Serial Number 165053000405
Shutter count (start) 8162
Camera Temperature 40C
Test Colour Temp 5200K
Lens EF-S18-55mm f/3.5-5.6□ISSTM
Focal Length 55mm
Termination Reason Success
Test Aperture f/5.6
Test ISO 100
Defocus Method Large defocus away from the camera
Distance to Target 2.7m to 2.8m
Starting AF Microadjustment 0
Tested AF Microadjustment Range Full (-20 to 20)
AF Microadjustment Step Size Auto
AF Consistency Constraint 6%
Total Shot Count 17
Calculated AF Microadjustment -11
Result Confidence Excellent
Consistency of Focus 98.6%

 

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:

Canon EOS 7D Mark II (serial number 165053000405) with EF-S18-55mm f/3.5-5.6□ISSTM

  • 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

 

Before/After Comparison

The images show the before and after shots.

 

AF

Microadjustment

Before 0

 

RGB Analysis Chart

The RGB Analysis chart shows the predicted sharpness across the AF Microadjustment range for red, green and blue light. The vertical lines indicate the predicted best AF Microadjustment for each of the 3 colours.

 

It is important to note that when run in JPEG mode, there is some contamination between the colours so the result is not truly representative.

RGB Analysis Details

 

Property Description
Red:  
Red Result -10
Red Confidence Excellent
Green:  
Green Result -9
Green Confidence Excellent
Blue:  
Blue Result -15
Blue Confidence Excellent

 

 

AF Microadjustment: -20

The following table shows information obtained for this test point:

  Shot 1 Shot 2 Shot 3
Aperture f/5.6 f/5.6 f/5.6
Shutter Speed 1/50s 1/50s 1/50s
EV 10.5 10.5 10.5
Colour Temperature 4993K 5004K 5026K
Camera Temperature 39C 39C 40C
Quality Measure 1259.5 1106.0 1209.6
Optimised No No No
Ignored No No No
Spectral Power (R/G/B) 33/32/35 33/32/35 33/32/35
Red Quality 1241.9 1074.2 1183.7
Green Quality 1239.0 1063.7 1182.7
Blue Quality 1295.3 1179.9 1255.7
HVR 10.8% 8.7% 10.0%

 

 

AF Microadjustment: -11

The following table shows information obtained for this test point:

  Shot 1 Shot 2 Shot 3
Aperture f/5.6 f/5.6 f/5.6
Shutter Speed 1/50s 1/50s 1/50s
EV 10.5 10.5 10.5
Colour Temperature 4993K 5004K 5015K
Camera Temperature 40C 40C 40C
Quality Measure 1445.8 1449.7 1457.2
Optimised No No No
Ignored No No No
Spectral Power (R/G/B) 33/32/35 33/32/35 33/32/35
Red Quality 1490.2 1507.1 1512.9
Green Quality 1517.1 1532.7 1540.8
Blue Quality 1332.2 1325.7 1333.7
HVR -2.1% -0.6% -2.3%

 

 

AF Microadjustment: -10

The following table shows information obtained for this test point:

  Shot 1 Shot 2 Shot 3
Aperture f/5.6 f/5.6 f/5.6
Shutter Speed 1/50s 1/50s 1/50s
EV 10.5 10.5 10.5
Colour Temperature 4993K 5026K 5015K
Camera Temperature 39C 40C 40C
Quality Measure 1453.9 1365.0 1441.0
Optimised No No No
Ignored No No No
Spectral Power (R/G/B) 33/32/35 33/32/35 33/32/35
Red Quality 1498.4 1375.9 1498.9
Green Quality 1539.2 1385.4 1543.5
Blue Quality 1333.5 1343.5 1288.0
HVR -0.4% 3.3% -6.3%

 

 

AF Microadjustment: 0

The following table shows information obtained for this test point:

  Shot 1 Shot 2 Shot 3
Aperture f/5.6 f/5.6 f/5.6
Shutter Speed 1/50s 1/50s 1/50s
EV 10.5 10.5 10.5
Colour Temperature 5026K 5026K 5026K
Camera Temperature 39C 39C 40C
Quality Measure 1341.7 1170.2 1139.6
Optimised No No No
Ignored No No No
Spectral Power (R/G/B) 33/32/36 33/31/36 33/31/36
Red Quality 1407.2 1238.0 1204.5
Green Quality 1460.0 1301.9 1255.2
Blue Quality 1180.9 998.7 976.5
HVR -12.0% -16.2% -17.2%

 

 

AF Microadjustment: 10

The following table shows information obtained for this test point:

  Shot 1 Shot 2 Shot 3
Aperture f/5.6 f/5.6 f/5.6
Shutter Speed 1/50s 1/50s 1/50s
EV 10.5 10.5 10.5
Colour Temperature 4971K 4993K 5004K
Camera Temperature 39C 40C 40C
Quality Measure 947.7 868.8 856.1
Optimised No No No
Ignored No No No
Spectral Power (R/G/B) 33/31/36 33/31/36 33/31/36
Red Quality 1005.5 924.7 907.8
Green Quality 1033.1 950.2 929.9
Blue Quality 821.8 754.9 744.5
HVR -15.3% -13.7% -13.2%

 

 

AF Microadjustment: 20

The following table shows information obtained for this test point:

  Shot 1 Shot 2
Aperture f/5.6 f/5.6
Shutter Speed 1/50s 1/50s
EV 10.5 10.5
Colour Temperature 5004K 5004K
Camera Temperature 40C 40C
Quality Measure 685.1 675.1
Optimised No No
Ignored No No
Spectral Power (R/G/B) 33/31/36 33/31/36
Red Quality 724.5 715.7
Green Quality 739.4 724.7
Blue Quality 602.3 594.1
HVR -10.6% -9.4%

 

 

Lens Profile

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

 

Focus Consistency

The Focus Consistency chart shows the focus variability at each tested point where available. This is calculated from the spread in sharpness values from shots at a single AF Microadjustment value.

 

A value of 100% indicated perfect repeatability. In normal use, a values above 97% indicate acceptable autofocus repeatability, and above 99% indicate very good repeatability. Note that the consistency of focus measurement is less relevant far from the best AF Microadjustment value.

 

If FoCal Comparison Data is available for this camera and lens a red/blue/green overlay will be added to indicate how your camera and lens performance compares with other users as follows:

  • Red: indicates below-average performance,
  • Blue: typical performance experienced by other users
  • Green: above average

Astigmatism Factor

The Astigmatism Factor chart shows the image quality ratio between the horizontal and vertical analysis directions. If this value varies by more than 10% across the range, or the average value is more than +/- 5% then your lens may be suffering from some decentering or lens element alignment issues.

 

Result Convergence

The Result Convergence chart indicates how FoCal determined the best AF Microadjustment value as more points were added to the data. There is no result for the first few points, then the result should stabilise as more points are added towards the end of the test (the right side of the chart).

 

The size of the green area gives an indication of the confidence in the result at that point. A large green area spreading across many AF Microadjustment values indicates poor data that will not give an acceptable final result.

 

Image Motion

As changes are made inside a lens (e.g. focussing or aperture change), the image projected onto the sensor can move slightly. The Image Motion chart shows the absolute number of pixels moved for each image compared to the first image captured.

 

Typically, the Image Motion should be significantly less than 10 pixels, and a repeatable higher value could indicate misaligned lens optics, camera movement or vibration during the test or other environmental or lens issues.

 

If FoCal Comparison Data is available for this camera and lens a red/blue/green overlay will be added to indicate how your camera and lens performance compares with other users as follows:

 

  • Red: indicates below-average performance,
  • Blue: typical performance experienced by other users
  • Green: above average