thanks for sending the info on the lenses you mentioned. Time for a pop quiz.
Anybody know why a 14mm DA lens with 90 degrees coverage would be bigger, slower, and costlier to make than the 20 mm lens with 94 degress coverage ASSUMING identical image quality? I am pretty sure I know why. The reason seems obvious to me but what do you all think the reason is????? JCO -----Original Message----- From: J. C. O'Connell [mailto:[EMAIL PROTECTED] Sent: Tuesday, October 26, 2004 8:46 PM To: [EMAIL PROTECTED] Subject: RE: M42 ultra-wide HUH? two lenses of same focal length will always have SAME AOV on same camera. I was talking about the merits of using a APS designed lens on a APS camera vs the waste of using a FF 35mm (24x36) lens on a APS camera. JCO -----Original Message----- From: Rob Studdert [mailto:[EMAIL PROTECTED] Sent: Tuesday, October 26, 2004 8:15 PM To: [EMAIL PROTECTED] Subject: RE: M42 ultra-wide On 26 Oct 2004 at 19:57, J. C. O'Connell wrote: > 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. So what is the point drawing comparisons between lenses with different final AOV? > BTW out of curiosity, what is the size and price of the lenses you > mentioned? FA20/2.8, L 1.7", D 2.7", W 0.56 lb, AOV (35mm) 94 Degrees, $499.95 (B&H) DA14/2.8, L 2.7", D 3.3", W 14.8 oz, AOV (APS) 90 Degrees, $699.95 (B&H) 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
