Step Adapter Rings Alrad

Step Adapter Rings

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 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.

 

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