Yup. That's been confirmed. Thanks for the heads up, Rod. keith
Rob Studdert wrote: > > On 12 Sep 2002 at 15:26, Keith Whaley wrote: > > > If I'm reading this right, somebody[s] think you can tell an aspheric > > lens from a NON-aspheric lens by some sort of measurement WE can make? > > If I read right, disabuse yourselves of that idea. > > Most aspheric optics are aspheric (vary from being perfectly > > spherical) by something in the order of several wavelengths of light! > > Nothing we can measure with _our_ crude instruments. > > > > On the other hand, maybe I read it wrong... > > Hi Keith, > > Yes I would assume that what you say would normally be the case however > regarding the aspheric version of the 15mm there is apparently a difference in > the front element diameter and curvature and this is not the aspheric element > from what I can gather. > > Cheers, > > Rob Studdert > HURSTVILLE AUSTRALIA > Tel +61-2-9554-4110 > UTC(GMT) +10 Hours > [EMAIL PROTECTED] > http://members.ozemail.com.au/~distudio/publications.html
