Originally posted by ddhytz Why did Pentax add an extra bit (cost increased) in an existing lens and sell it cheaper? It sounds silly.
For the same reason that in 1961, Pentax took the Asahi Pentax S3, erased the 1/1000sec. marking on its speed selection dial, and sold it for a cheaper price under the name Asahi Pentax S1. The mechanism of the shutter was not modified, so clever people at that time just bought the cheaper S1, turned the speed dial to the unmarked notch next to 1/500sec. and enjoyed 1/1000sec. shutter speed just like if they have bought the S3
It is interesting to note that the Auto-Takumar 55/2 also appeared as a kit lens for the Pentax S1, while the more expensive 55/1.8 was sold with the deluxe S3: same camera, same lens but targeting two different market segments...
Cheers!
Abbazz