When your machine vision identification system starts returning distorted measurements, the lens is often the first suspect. Correcting that requires a calibration target with a known geometric pattern, and many setups stop there. But if you also need dependable color reference, you'll normally need a separate target. This pair of boards tackles both jobs at once.
Quick Verdict
The Pair of Machine Vision Lens Distortion Calibration Target Boards w/ ColorChecker is a practical two-in-one calibrator. At USD 180.00, it's a cost-effective option for machine vision identification work, especially if you need a portable setup that doesn't require external lighting.
Who It Suits
This kit suits anyone working with machine vision identification who needs to remove lens distortion and also wants color accuracy in the same workflow. Since it's battery-powered, it's convenient for field calibration. The universal compatibility makes it flexible for various camera systems, and the fact that it comes as a pair means you can calibrate two cameras in one session or keep a spare ready.
Product Notes
Pair of Machine Vision Lens Distortion Calibration Target Boards w/ ColorChecker

The key advantage of this set is that it combines distortion calibration and color reference on one board. The built-in ColorChecker targets let you profile your camera's color response while you measure lens distortion, saving you the trouble of swapping targets. Another practical feature is the LED grid illumination, which is integrated into the board. That means you get even, repeatable lighting without rigging external lights. The board runs on AA batteries (Procell or standard), adding to its portability. The pair includes two boards with model/serial numbers 1-001-00 and 1-009-04, and the black design helps minimize stray reflections. It's listed for full-frame digital formats, so it aligns well with full-frame machine vision cameras.
Meaningful Trade-Offs
The most obvious trade-off is the used condition. It's described as fully operational, but any pre-owned calibration board can have slight wear that might affect precision. You'll also need to supply your own AA batteries, and the battery-powered LED grid means you should keep spares handy during long sessions. And because this is a two-board set, it may be more than you need for a single-camera rig, though a spare is usually welcome.
Bottom Line
If you're looking to improve the accuracy of your machine vision identification system and want both distortion correction and color reference in one portable package, this pair is worth a close look. At USD 180.00, it delivers meaningful capability for the price. Just be prepared for used condition and bring fresh AA batteries.