Top critical review
2 people found this helpful
Works, but limits minimum field of zoom from 18 to 30-35mm
on January 13, 2012
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.