It doesn't upset artists to find out that artists used lenses or mirrors or other aids, but it certainly does upset the art historians.

Early life and education
Close was born in Monroe Washington. If you impose a limit to not do something you've done before it will push you to where you've never gone before. See also
List of Chuck Close subjects
The Portrait Now.

Charles Thomas "Chuck" Close (born July 5 1940) is an American painter and photographer who achieved fame as a photorealist through his massive-scale portraits. Though a catastrophic spinal artery collapse in 1988 left him severely paralyzed he has continued to paint and produce work that remains sought after by museums and collectors. Close currently lives and works in New York's West Village and in Bridgehampton New York.