This page is an entry in the Key.

HDR
(High dynamic range)

On this website the term “HDR” refers to combining multiple exposures of different brightness ranges to compensate for cameras’ limited dynamic range compared to the human eye. (Many smartphones do this by default under certain light conditions.)

• HDR is never necessary for a photograph to qualify as TCQ.

Combining exposures to increase dynamic range is never necessary to meet the Trust Checklist.

Any normal, functioning camera or device can capture a wide enough dynamic range to meet the requirements of Q7.

• All combined exposures in an HDR photograph must meet all of TCQ’s requirements for combining exposures.

Excessive HDR effects keep a photograph from meeting Q7 if the photograph would not meet rinairs for not misrepresenting brightness relationships.

Anytime the viewer can detect that HDR was used, it is likely that photograph will not meet rinairs.