Canon mr-14ex ii ring flash with Sigma 105mm f/2.8 (filter diameter 62mm) compatibility

[Saw1]

I am trying to find an adapter that matches my Canon mr-14ex ii ring flash with Sigma 105mm f/2.8 macro lens (which has a 62mm thread).

Macrolite adapter are not available in this size, are there any other options for me?

I've been sold a 62 to 67 step up ring and a 62 to 58 step down ring, which both obviously don't work.

It has to be a step down as the ring flash is smaller in diamater than the lens, but I'm not sure which one to get. Appreciate the help! 

Link to Flash: Macro Ring Lite MR 14EX II

Link to Lens: Sigma AF 105mm f2.8 EX DG OS HSM Macro (Canon) Ø62mm [Removed link per Community Guidelines]

[Saw1]

Correct me if I'm wrong, but if I put a 62 to 58 step down ring on, then get a macrolite 58C adapter, will that work? Any easier ways with only one ring/adapter? 

[p4pictures]

Shot of going to a machine shop and having them make you a custom adapter, then probably the best method is the 62 to 58 step down adapter then the Canon macrolite adapter 58C. 

[normadel]

What body is the lens on?  If it's a crop-sensor, a 62-58 stepdown will be fine. The full image coming through the lens is cropped by the APS-C sensor anyway, so there's no coverage loss. And if you're doing macro close-up work, you aren't making use of the lens's full area of coverage even on a full-frame body.

[Saw1]

Perfect I'll see how this goes, thanks!

[Saw1]

Good point. Canon r10, so shouldn't be an issue

[Saw1]

Unfortunately, macrolite adapter 58c seems to be unavailable literally everywhere! Any potential sources you guys can think of? Based in Aus, but happy to purchase from anywhere.