Interchangable
Everyone is familiar with interchangable lenses for the “old” film cameras and these varied in focal length and prices. Now with digital SLR’s most use this system to achieve closer results - handy for snapping at lions on the dusty plains of Africa. Most camera makers use a lens mount that is compatible with the lenses that you used on your old SLR - older Sigma lenses can’t be used on most Canon DSLR’s without being rechipped (I have heard that Sigma can no longer re-chip these older lenses due to no chips being available - if you know otherwise please correct me) There has also been a firm line in the sand between DSLR’s and Camcorders however with Canon’s 5D which is getting in on the video action there is now maybe a case for interchangable lenses on camcorders. Sony’s “interchangable lens HD camcorder” will take NEX lenses as well as Sony’s range of A-mount lenses (via an adaptor) This may be the way forward in combining the unique qualities of both the camcorder and the DSLR as many of the latter lack the features of the former. So hopefully other manufacturers will follow Sony’s lead and produce a camcorder that can take not only a new range of lens but also be able to use existly lenses. However the only down side to this will be if makers stick with a mount that only takes lenses from the same manufacturer and thus depriving users from what maybe be better quality optics.