Polaroiding is a form of post-processing used by Ken Walker at Museum Victoria. All images on PaDIL have this technique applied before publication.
Ken observes, ‘I find that using this technique gets over many of the inherent problems of web delivery of jpgs to non-colour calibrated PC monitors.’
Follow these steps to Polaroid an image. (Steps are illustrated using Adobe Photoshop, but any image manipulation software with equivalent functionality can be used.)
Open the Curves window (Ctrl-M).
Set the 5 points as shown.
To get smaller grids in the curve box, click your mouse inside the grid box while holding down the ALT key!
Set the black (0) and white (255) points to just encompass the entire dynamic range of image.
Open the Unsharp Mask window (Filters > Sharpen > Unsharp Mask)
Open the Shadows/Highlights window (Image > Adjustments > Shadows/Highlights)
Adjust as necessary to even out the background. You may need to only adjust the highlights.
All images courtesy of Ken Walker. Images of Semanotus bifasciatus originally provided by AQIS- Melbourne; the specimen was intercepted from China.