Yes It's a hybrid, its expensive and the DO part is for controlling chromatic aberration (or controlling the colour separation from the refracive elements), and not primarily for focussing.
Dag > > Fra: "Ryan K. Brooks" <[EMAIL PROTECTED]> > > Canon 400 DO lens. > > Dag T wrote: > > > Diffractive optics is great, as long as you�ve got monochromatic light > > or want to separate the colours. In photography you usually don�t. > > > > Try a laser puls in stead of a flash! > > > > Dag T > > > > > > P� l�rdag, 29. mars 2003, kl. 07:38, skrev Ryan K. Brooks: > > > >> Counterpoint: Diffractive Optics. > >> > >> Bruce Rubenstein wrote: > >> > >>> I believe it's real, but more of a lab curiosity now. Getting > >>> technology from labs into consumer products isn't easy. Most folks > >>> have no idea how many things never make it. A show of hands for > >>> everyone that remembers "bubble memory". Now, everyone who has some > >>> in any device, raise your hand.... See what I mean. > >>> > >>> BR > >>> > >>> [EMAIL PROTECTED] wrote: > >>> > >>>> Did anyone see this technology? It's either a great early April Fools > >>>> joke,or a potentially valuable emerging technology. > >>>> > >>> > >>> > >> > >> > > > > >
