We toss about the concept of lens sharpness all the time. We rarely get consistent and objective in our assessments. Facts and data can quickly destroy a perfectly good emotional rant but the empiricist scientist in me is longing for something reproducible and objective. Before someone says "You might be a photo-geek if..."yes I already know it. My kids tell me. Does anyone have an easily available, affordable, anyone-can-own-one suggestion for a resolution target chart. The web search turns up the Edmond Optical charts. Suggestions anyone???? http://www.edmundoptics.com/onlinecatalog/Browse.cfm?categoryid=289&level=2 Some are reasonable, some not.