1 of 1 people found the following review helpful
5.0 out of 5 stars
Ring Flash Adapter, Feb 2 2009
By Longhorn "Longhorn" - Published on Amazon.com
This review is from: 72mm Macro Flash Adapter Ring For The EM-140 Ringlite Flash (Electronics)
Needed to adapt my ring flash to my camera. Ring flash does not fit all cameras, so be sure to check it out, so you can order the right adapters when ordering the flash.
4.0 out of 5 stars
Gets the job done, Feb 29 2012
By K. Zakhary - Published on Amazon.com
I use this to mount my Sigma EM-140DG Macro Ring-Flash to my Canon EF-S 60mm 1:2.8 Macro lens with Canon EOS 7D. All I can say is, it works great for my use - intraoral medical photography.
The only qualm I have is that it does not prevent the ring flash from rotating during use. It WILL lock the flash in place to prevent it from falling off, but that's about it.
3.0 out of 5 stars
Works, but limits minimum field of zoom from 18 to 30-35mm, Jan 13 2012
By W. Ferme - Published on Amazon.com
This review is from: 72mm Macro Flash Adapter Ring For The EM-140 Ringlite Flash (Electronics)
I have owned a Sigma ring flash and could not use it on any of my nikon lenses because it ships with 55mm ring. I ordered this adapter as suggested on sigma website. Works great on the 72mm lens opening of my nikkor dx 2.8-5.6 zoom lens 18-200mm. Problem is a strong vignetting on corners of photos. This was noticeable even when viewing scene through my nikon viewfinder. I realized that the adapter projects quite a bit out of the lenses. Unless you set zoom to minimum 30 -35 mm you cannot eliminate it. My fault for not investigating further, but maybe Sigma could design the adapter flange which holds the flash; it should project inside rather than outside the lens to allow full use of all zooms. The zoom function would be minimally affected since the handling barrel is quite extended on Nikon, Sigma and Tamron lenses. Bad design. Great ring flash.