Reduction Ring Set for Retra Strobes w/Macro Rings by awkward_swine MakerWorld: Download Free 3D Models
I've had a design for Reduction and Macro rings for the Backscatter HF-1 Strobe for some time and they work great. I've continued to refine them over time and decided that I could easily adapt them for Retra Strobes as well. I borrowed a Retra from a buddy and went ahead and made the new models over the last week.
There is a primary reduction ring that does not block the light path but slightly limits spread of the wide-angle beam. I've found this useful for reducing flare and glow with very wide-angle lens (fisheye, etc) in less than crystal clear water. You can add additional restrictors with 60mm and 38mm apertures. These are useful for macro scenes and help to limit illumination of background features.
The rings are printed with PETG. There are TPU rubber gaskets that hold the rings in place. The base ring slots into the Retra bayonet fitting. Just align the arrow mark and turn counterclockwise. Two small rubber gaskets are stretched over the macro rings and provide enough friction to hold them in place securely.
These should work on all current model Retra strobes up to and including the new Maxi and Max-2 strobes.
I've had a design for Reduction and Macro rings for the Backscatter HF-1 Strobe for some time and they work great. I've continued to refine them over time and decided that I could easily adapt them for Retra Strobes as well. I borrowed a Retra from a buddy and went ahead and made the new models over the last week.
There is a primary reduction ring that does not block the light path but slightly limits spread of the wide-angle beam. I've found this useful for reducing flare and glow with very wide-angle lens (fisheye, etc) in less than crystal clear water. You can add additional restrictors with 60mm and 38mm apertures. These are useful for macro scenes and help to limit illumination of background features.
The rings are printed with PETG. There are TPU rubber gaskets that hold the rings in place. The base ring slots into the Retra bayonet fitting. Just align the arrow mark and turn counterclockwise. Two small rubber gaskets are stretched over the macro rings and provide enough friction to hold them in place securely.
These should work on all current model Retra strobes up to and including the new Maxi and Max-2 strobes.
