Camera Lens Focus Calibration Card AF Micro Alignment Ruler Folding Chart
Description:
100% brand new and high quality
Features:
This compact ruler allows you to determine if your lens is auto-focusing accurately as it should. It is an essential tool that is particularly useful when shooting with a shallow depth of field where focusing should ideally be spot on.
You can use this ruler to determine how off the focusing is for a particular camera / lens combination and on supported cameras adjust the cameras auto-focus settings to resolve this
On Nikon cameras this feature is known as AF Fine Tune. On Canon and Sony cameras its known as AF Micro Adjustment. Please refer to your cameras instructions manual to see if this feature is present.
How to use:
Set up the ruler.
Ensure both the camera and ruler are level exactly perpendicular and at the same height. It is best to mount the camera on a tripod to do this.
Set the lens to the widest aperture to obtain the shallowest depth of field. This will make it easier to determine if your lens is focusing accurately. Auto-focus on the crosshair at the center of the ruler then take a photo.
Inspect the photo to see if focusing is accurate. It is recommended that you do this on a computer since you will be able to see better on a bigger screen. If focusing is accurate the 0 on the ruler should be the sharpest point on the image and the other numbers get blurrier as you move away from the 0.
If any number above the 0 is clearer then your lens is backfocusing. Otherwise if any number below the 0 is clearer then your lens is front focusing. In either case you would have to set the auto-focus micro-adjustment parameters on your camera body until you are able to obtain a picture that is sharpest at the 0 on the ruler.
Specification:
Size:19x12.3cm/7.48x4.84(Approx)
Quantity: 1 pc
Warm prompt:
1.As different measuring methodsit will occur 1-3 cm deviation about the itemsplease ensure that it is okay for you before ordering.
2.Because of different monitors and lamplightthe picture may not reflect the actual color of the itemreally thank you for your kind understanding!
3.Lens Focus Calibration Card onlyother accessories（if any）irrelevant demo in the picture are not included.
Packaging includes:Lens Focus Calibration Card x 1 (without retail package)
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