It is of no use whatsoever because you don't use the zoom. Ever.
Well, OK... you may sometimes... and in such a case, a controller allows you to (1) keep your hand on the pan bar, and (2) if your controller is programmable like the Manfrotto I have, you can program your zoom to be as slow as you want without having to worry about how much pressure you apply on the button. I do it all the time ! ;D
Plus, it looks cool and its sleek black coil lends it some casual but professional look which attracts a lot of female attention. Right. :
[quote author=Monglane link=board=Links;num=1083877599;start=0#1 date=05/06/04 at 16:54:12]and its sleek black coil lends it some casual but professional look which attracts a lot of female attention. Right. :[/quote]
I never use the zoom during a take unless a producer forces me, but I use it all the time between takes to resize the frame while keeping my hand on the pan bar, like Monglane said. Also, like he said, if you have to do a zoom during a take it is better to use the controller because it minimizes camera shake and is a more natural human position when combining it with a pan motion.
Also, keep in mind that not everyone is shooting exclusively feature films with this camera! In live multi-camera shoots we do zooming all the time during the shot, sometimes combined with a jib move, sometimes from a tripod.
Put the camera on a jib arm and the need for a zoom controller becomes instantly obvious.
[quote author=Barry_Green link=board=Links;num=1083877599;start=0#4 date=05/07/04 at 07:39:12]
Put the camera on a jib arm and the need for a zoom controller becomes instantly obvious.[/quote]
You said it, Bro! As soon as that camera goes up on the jib, you're like, "Crap, now how do I get to the zoom?"
Also, if you need an extension cable, top-grade ones can be had from Varizoom, but you can also use a simple stereo 5/32" extension cable. They're also called REM cables, for starting/stopping audio tape recorders by using footpedals. ;D