https://makerworld.com/en/models/1892627-reduction-ring-set-for-retra-strobes-w-macro-rings#profileId-2027518

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.

Edited October 16Oct 16 by Dave_Hicks

3 hours ago, Dave_Hicks said:

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. Y

It is exactly what do the original Retra reflector, and he give more power

Just now, CaolIla said:

It is exactly what do the original Retra reflector, and he give more power

Sorry, I don't understand what you are saying.

Yes, Retra makes a similar set of rings for over $100 USD per strobe.

i talk about that

Just now, CaolIla said:

i talk about that

Yes, that is a thing that exists. And a completely different product.

no the base (in black) is the same it restrict the beam and it help when the water is no so clear when you have a wideangle.

It is not sheap I agree but this parts are realy helpfull.

Edited October 16Oct 16 by CaolIla

11 minutes ago, CaolIla said:

no the base (in black) is the same it restrict the beam and it help when the water is no so clear when you have a wideangle.

It is not sheap I agree but this parts are realy helpfull.

I really don't get your point. I've shared a free solution that one could also spend a lot of money on. You keeping pointing to the retail product that solves the same problem. Everyone knows about that already. Thanks for sharing.

This the DIY forum, and this is a DIY solution.

36 minutes ago, Dave_Hicks said:

This the DIY forum, and this is a DIY solution.

I'm not sure Retra appreciate that you make a copy of what Retra make.
Retra give really good support (see an other recent topic) for that Retra need to earn money...also with such part.

Again if you make and publish some new parts no "copy of" I found that ok sharing this also OK

I have a retra snoot and i'm trying to make a new one not a copy but my version with some improvement (if it possible, not sure ;) )

We definitivly don't have the same vision of the DIY philosophie.

For me printing a part with a 3D printer is not DIY. DIY is make the 3D model and print it.

Have a nice day
Hugues

You literally said you made your own set of bumpers. That is called hypocrisy.

I didn't come here for an argument and I am sorry that you choose to be confrontational. Enough said.

6 hours ago, Dave_Hicks said:

Enough said.

..... agreed... let's move on. :-)

Thank you for sharing!