I'm thinking of getting a snoot for my 580 to be used for birding purpose. Wonder if the seniors here can provide more options. I've tried Googling and only found snoots from lumiquest, opteka, sunpak and micnova. Will be using it with my 50D + 100-400
Am wondering if the snoot in this video is advisable for fill purpose and if any of you know the brand and make.