Flash 24 -

These are interchangeable to allow for different testing capacities. Maintenance:

, a specialized twin-flash system for macro photography, or the , an industrial spring testing machine. Photography: Yongnuo YN24EX Macro Flash Yongnuo YN24EX (often referred to as " Flash 24

Enable this on your camera (especially Sony models) if shooting in bright daylight to allow faster shutter speeds. Technique: These are interchangeable to allow for different testing

Use f/5.6 to f/8 for a balance of depth of field and ambient light. Flash 24

Use a 24x24 black velvet cloth behind subjects to absorb light and create a pure black background.