At the extreme edges, the coating is very thin.

Microsoft LDAP is conformant to LDAP set of standards; however, it is non-conformant to many standards.

There with fantastic garlands did she come / Of crowflowers, nettles, daisies, and long purples, / That liberal shepherds give a grosser name, / But our cold maids do dead men's fingers call them.

You can always see the covered area on the focusing screen regardless what the subject distance might be or what close-up accessories are used.