andrewtansj
Senior Member
was watching some photography video and saw a wedding photog using a 3rd-party lens focus tab or ring with grooves to improve grip like a focus tab would, wrote an email to the photographer unfortunately he can't remember where he got it. so wanna ask anyone ever come across with a similar accessory. thinking of using it on my noct and 90mm summicron which do not have the focus tab. here's an extract of the video. 

