I believe that is Albert Maysles with the camera.
Here's a page from my Tribute to Jimi. We published stills from Albert Maysles' footage in Guitar World: The unpublished Hendrix Vol. II. That would be Guitar World March 1988, Special Issue. Hendrix Lives! Tribute to a Genius. The Unpublished Hendrix Vol. II. P. 33, "Backstage With the Stones."
Three of the four photos on the page (two of Jimi and Keith, two Jimi and Mick Taylor) were indeed stills from Maysles' unreleased footage. This is a fourth one by photographer Ethan Russell.
Now here is the kicker: Stones are going out on the road again next year, another "endless tour," but guess what? They will most likely include some guest spots on the tour by a very great-sounding Mick Taylor! Here is a video tribute to Ian Stewart featuring Ben Waters, Charlie Watts, Dave Green with Jools Holland, Ronnie Wood, Mick Taylor, Bill Wyman, Mick Hucknall and other guests at the Ambassadors Theatre 9 April 2011.
Here's Mick on his discography: "I played lead guitar for the Rolling Stones from 1969 till 1974 and played on some of the group's best albums, including "Let it Bleed," "Get Yer Ya Yas Out," "Sticky Fingers," "Exile On Main Street," "Goat's Head Soup" and great live bootlegs!
"My fluid lead guitar shaped some of the Stones' best songs and albums. Songs like "Honky Tonk Women," "Gimme Shelter," "Love In Vain," "Brown Sugar," "Sway," "Bitch," "Tumbling Dice," "Rocks Off," "Shine A Light," "Ventilator Blues," "Heartbreaker," "Coming Down Again," "Silver Train," "Star Star," "Time Waits For No One," "If You Can't Rock Me" – these all feature my lead and slide guitar contributions."