I think you are misunderstanding the defintion of obsolete. I don't think it means for me or you or anyone else, to be obsolete it has to be ***universally*** unwanted or undesireable to use anymore.
Just because YOU don't want to use a product anymore for whatever reason doesn't mean that its obsolete because if your reason for not wanting to use it DOESN'T EVEN APPLY to large number of other users application for the product, than it not obsolete, its just not what you want. Big difference... GET IT? JCO -----Original Message----- From: Adam Maas [mailto:[EMAIL PROTECTED] Sent: Friday, September 23, 2005 10:12 AM To: [email protected] Subject: Re: Camera engineering (was Re: Rename request) I consider any lens that doesn't permit use of modern metering or flash technology to be obsolete. K/M lenses are thus obselete (Although you can modify them to allow modern multi-segment metering). In addition, they, like the A lenses, do not allow the lens-camera communication that FA and FA2 lenses do. That doens't make them unusable. Just obsolete. To go along with the car analogy, I consider carburated engines to be obsolete, as the superior electronic fuel injection has rendered them obsolete. Same for pushrod engine designs, which are obsolete as well. But both are still usable. -Adam J. C. O'Connell wrote: > We went thru this before. The defintion > of obsolete as I recall it when discussed > is way too vague. Just because an item doesn't > have some later feature doesn't make it > obsolete IMHO because that's like saying > if your current car isnt a hybrid its obsolete > because it doesn't have hybrid feature that > came out later. Or even worse, if the feature > that came out later is of little use like > saying Pentax POWER ZOOM bodies made all those > before it obsolete. Yeah right! > GET IT? > jco > > -----Original Message----- > From: Adam Maas [mailto:[EMAIL PROTECTED] > Sent: Friday, September 23, 2005 8:44 AM > To: [email protected] > Subject: Re: Camera engineering (was Re: Rename request) > > > K/M Lenses do not communicate max/minimum aperture information, allow > setting aperture in 1/3 stops, communicate focal distance, communicate > MTF data or communicate focal length. FA2 lenses communicate all this > information, FA lenses communicate all but MTF and focal distance, A > lenses give only the max/min aperture and allow setting aperture in 1/3 > stops. This information is required for Matrix-metering, P-TTL flash > metering and the A position is required for Program and Shutter Priority > AE modes. > > K/M lenses are obsolete as they lack these capabilities. Doesn't make > them unusable or inferior, just obsolete. > > -Adam >
