Lens Calibration
Bibble's Lens Correction tool includes profiles for most popular cameras and lenses on the market today. As new lenses and cameras become available, we will include calibration databases for these new lenses.
If you have a lens that is not in our database, we can calibrate that lens for you. All you need to do is take several pictures (at multiple focal lenghts for zoom lenses) and upload those to us in a zip file. Select "Support" as the Recipient on the upload page.
In order to properly calibrate the lens, calibration images must meet the following requirements:
- Most important: continuous, level and straight horizontal lines aross the top of the image, and at various points towards the middle of the frame.
- Include vertical and horizontal lines in a grid pattern. Large glass buildings make good test subjects.
- Level Shot (not pointing up or down or leaning right or left)
- Landscape orientation
- 10 to 15 feet away from the subject
- RAW or full sized JPEG format, including EXIF data
- Include images at multiple focal lengths, including the widest (smallest focal length) and longest (highest focal length), with not more that a 15% gap in focal lenghts (for example, 20mm and 23mm or 100mm and 115mm)
- Grid pattern does not need to cover the entire frame (grassy area in the bottom left example is acceptable)
Below are two example calibration images. The left image contains the necessary elements to allow the lens that took the picture to be calibrated. The image is in landscape orientation, contains horizontal and vertical lines, and was shot level. The right image, though it contains some of the elements needed, is not usable for lens calibration, because the camera was tilted upwards.
Acceptable Calibration Image
Unacceptable Calibration Image
