The Datacolor SpyderLensCal Autofocus Calibration Aid is a focus test chart, designed for use with select DSLRs that support autofocus adjustment. The chart allows you to test the autofocus accuracy of your camera - making it easy to fine-tune it for optimum performance.
The SpyderLensCal features a built-in level and tripod mount, allowing you to create precise testing environments. Cameras that support autofocus adjustments include the Canon 50D, 7D, 5D Mk II, 1D Mk III, 1D Mk IV, and 1Ds Mk III, the Nikon D300, D300s, D700, D3, D3s, and D3x, Sony A850 and A900, the Olympus E-30 and E-620, and the Pentax K20D, K-7, and K-5.
Reviewed by 2 customers
I had tried gerry rigging several things to adjust my many lenses. Helpful (at times), but never terribly accurate. This design brought me that accuracy & the cleverness of the design made it very practical as well. The only thing that kept it from that 5th star was the price is a bit steep. But ultimately it's cheaper than an expensive lens that isn't focusing correctly.
Very well designed, can see how far off of focus you are. Could use better instructions. Kind of pricey for something that is used only once for each lens on a new camera. Will not use again unless I buy a new camera or lens. Mostly useful with faster lenses, slower telephoto lenses have enough DOF to cover focus errors.