Digi-Slave L-Ring & Canon G5/G3

[csnudelman]

Has anyone used the new Digi-Slave L-Ring (or Ultra) on a Canon G5 or G3? Did you use a lens adapter tube that was designed for the G5/G3 to use 52mm accesories (aftermarket) or a step-down ring (58mm-52mm)? Did it cause vignetting? How do you feel about this setup?

thanks, Craig