I notice that canon lenses zoom to a longer focal length by rotating the ring counter-clockwise, & if I'm not mistaken, nikon does it clockwise. Any particular reason why canon or nikon did it this way? What about other brands, like sigma, tamron, tokina...?
I think the 'conventional' thinking would be clockwise to zoom more. Most prosumer digicams seem to do it this way.
If u are an SLR user, and if u had a choice between clockwise or counter-clockwise, which would u choose? Doesn't matter if u are already a canon or nikon user... just your personal preference.