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Lens Calibration .pdf



Original filename: Lens Calibration.pdf
Title: PowerPoint Presentation
Author: W.S. Toh

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How to calibrate camera
lens autofocus

HELLO
My name is Kuih Ko Swee. I share
the passion for photography by
giving free presentations. You can
find me @kuihkoswee

“A portrait is not made in
the camera but on either
side of it.”
- Edward Steichen

WHAT YOU NEED

• The lens and camera…
• Lens Focus Calibration Chart – You can get this for cheap on eBay, or
just use a ruler as substitute.
• A tripod is recommended.

STEP 1 – SAMPLE THE AUTOFOCUS






Do the calibration in a well-lit place.
Use the single or center focus mode.
Place calibration chart on table.
Place camera perpendicular to calibration tool.
Focus on the 0 mark and take a shot.

STEP 1 – SAMPLE THE AUTOFOCUS

STEP 2 – ADJUSTMENT
• If the focus is spot on the 0 mark, no adjustment is required.
• Otherwise for:
• Nikon: Setup Menu > AF Fine Tune > Set AF Fine-Tune
On > Saved Value.
• Canon: Autofocus Menu > AF Microadjustment >
0:Enable > Adjust by Lens.
• Others: Sony, Pentax, and Olympus also has a similar
AF Adjustment function.
• Set a positive value if focus is before the 0 mark.
• Set a negative value if focus is before the 0 mark.

STEP 2 – ADJUSTMENT

STEP 3 – REPEAT
• Simply repeat the whole process.
• Enter an adjustment value, retake a test shot.
• Readjust until the focus lands on the 0 mark.


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