Flash test using a Metz 50 AF-1 flash with Foto 8"x9" diffuser, next a plastic milk bottle, a direct flash, and last thek "Black foaming thing" to flag the flash. Camera is Pentax K-S2 with FA 50mm F2.8 lens. The "Black Foamie Thing" can be read about here: http://neilvn.com/tangents/about/black-foamie-thing/