Step Adapter Rings

Step-Up Rings

• Use larger diameter filters on lenses with smaller diameter filter threads
• Often mandatory for shorter focal length lenses in order to prevent vignetting
• Available sizes: SU22.5-25.5 - SU77-105

Step-Down Rings

• Use smaller diameter filters on lenses with larger diameter filter threads
• The diameter of the filter or lighting to which step-down rings are coupled will be much smaller than the diameter of the lens (often resulting in vignetting)

Step-Up Part Numbers

Step-Down Part Numbers