Step Adapter Rings

Specification & Models:

Step-Up Part Numbers

SU22.5-25.5
SU25.5-27
SU25.5-30.5
SU25.5-37
SU25.5-46
SU27-30.5
SU27-37
SU27-40.5
SU27-46
SU28-37
SU30.5-37
SU30.5-46
SU34-37
SU34-46
SU35.5-37
SU35.5-46
SU37-43
SU37-46
SU37-49
SU37-52
SU37.5-46
SU39-46
SU40.5-46
SU40.5-49
SU42-46
SU43-46
SU46-49
SU46-52
SU46-55
SU46-58
SU49-52
SU49-55
SU49-58
SU52-55
SU52-58
SU52-62
SU52-67
SU52-72
SU52-77
SU55-58
SU55-62
SU58-62
SU58-67
SU62-67
SU62-72
SU62-77
SU62-82
SU67-72
SU67-77
SU72-77
SU77-95
SU77-105

Step-Down Part Numbers

SD27-25.5
SD30.5-27
SD34-30.5
SD46-40.5
SD49-46
SD52-46
SD52-49
SD55-46
SD55-49
SD55-52
SD58-46
SD58-52
SD58-55
SD62-46
SD62-52
SD62-55
SD62-58
SD67-46
SD67-55
SD67-58
SD67-62
SD72-46
SD72-55
SD72-62

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 adapter part numbers are made up of the lens thread size in mm and the filter size in mm. Ex: SU25.5-27; M25.5 (lens thread), M27 (filter thread) Available stock sizes are listed below.