Printing High Dynamic Range Images

Benji EuvrardSupervisor: Shaun Bangay

Not him

HDR Images

Photo by CodyR

HDR Images

• Greater dynamic range of exposures

than normal digital imaging techniques • 32-bit images (96 bits per pixel for colour image)

as opposed to 8- or 16-bit for normal photos

• Range of exposures

HDR Images

Photo by Scott Kelby

Displaying HDR Images

• Hard

• Expensive

Trentacoste, M., Heidrich, W.

Printing HDR Images

• “However, after the HDR was completed I compared my end result with the normal JPG and RAW files and I couldn't see any difference.” M Sodicoff – Photo.net Forum

• “When we printed it out … we could barely notice the difference.” R Watcher – Photo.net Forum

Printing HDR Images

• How?

• Good question

Impossible

Tonal Mapping

Lambda Type-C Printing

• At least three emulsion layers of light-sensitive silver salts

Layers of ink

Layers of ‘paper’

Shine light at different angles

Evaluation

General Timeline

• Understand HDR Images

• Find methods of printing already in use

• Evaluation strategies

• Devise and test various printing techniques