The LensAlign Focus Calibration System from RawWorkFlow.com provides a unique and precise tool for testing cameras for front or back-focus problems when using “fast glass” (lenses with aperture openings of f4 or larger). With today's sophisticated DSLRs and modern lenses, there is a potential front/back focus problem. Prior to LensAlign, photographers did not have access to a proper testing methodology. Without confirmation of proper AF operation, a purchaser of new or used equipment will not know if it is working to its full potential. With LensAlign, a new lens purchase can be verified on one or more camera bodies.Read more.
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