Hi, I realise my request will only be applicable for VERY few people who use ML but if its an easy thing to code then it would be greatly appreciated.
So anyway, i recently bought a canon power zoom 35-80 lens, which you may know was the only canon electronic zoom lens for an SLR (or as far as i know) http://www.canon.com/camera-museum/camera/lens/ef/data/standard_zoom/spec/ef_35~80_4~5.6pz.jpg
When attatched to my 550D/t2i, it zooms with the buttons on the side with no problem when in photo mode, but when live view is turned on or in movie mode, the zoom no longer works. Not sure why but if it was possible to enable this function in movie mode it would make for very nice smooth zooming.
If i can help any more with info on the lens i'll be happy to provide it.
(p.s - thank you so much for all your hard work with ML)