your comparison is not what I was talking about. I was talking about two lenses of the same focal length, one designed only to cover APS and one designed to cover FF 35mm.
BTW out of curiosity, what is the size and price of the lenses you mentioned? JCO -----Original Message----- From: Rob Studdert [mailto:[EMAIL PROTECTED] Sent: Tuesday, October 26, 2004 6:53 PM To: [EMAIL PROTECTED] Subject: RE: M42 ultra-wide On 26 Oct 2004 at 15:57, J. C. O'Connell wrote: > I think the APS sized lens makes sense for one > thing, the widest lenses, under 20mm. The reason > is they would be much smaller and less expensive > than ones designed to cover full frame 35mm and > theretically they could also be sharper and more > contrasty because far fewer elements would be > needed to cover the APS angle vs, the full frame > angle of the same focal length. There is no need to theorize regarding most of your points. Just compare the size, construction and price of the DA14/2.8 and the FA20/2.8. Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications/ Pentax user since 1986, PDMLer since 1998
