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Do you have concerns you lens has been knocked or dropped? This test will give you the proof.
Available for Canon, Nikon, Sigma and Tamron (with Nikon or Canon mounts)
ASTIGMATISM TEST
Due to significant risk of buying used and even brand new photographic equipment the 'Stig Test' can confirm if the glass elements of the lens are correctly aligned. In other words has the lens been banged or dropped!
Once the Astigmatism test has been run we will supply a full test report for the lens. This report can give irrefutable evidence of the quality of the lens element alignment. If the the test results show the elements are significantly out of alignment then the lens can be returned to the retailer if within your 14 days cool off period.
We also offer a lens optimum test in which we can identify the best aperture in which to shoot at (often referred as the lens sweet spot) and the point at which diffraction occurs.