Inside a can of "air" you can hear and feel a liquid It can't be compressed liguid air see:
http://en.wikipedia.org/wiki/Aerosol_spray You would need something like this: http://en.wikipedia.org/wiki/Gas_cylinder The stuff you force inside your camera is an aerosol. At best it's a very pure aerosol, most likely it's not. Spray a little "air" on a clean UV filter and most likely it's dirty after cleaning. Toine -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.