SMC Takumars vs. Pentax K's

Is it safe to say that the late SMC Takumar lens formulas became the early SMC Pentax or K lenses? I've been looking around trying to find out and have seen a few references, but not for every lens. Boz's site has the K optical formulas, but I haven't seen a similar site showing the late SMC

Re: SMC Takumars vs. Pentax K's

Is it safe to say that the late SMC Takumar lens formulas became the early SMC Pentax or K lenses? Jim Most are; the few SMC takumar optical formulas that have been modified are K28/3.5, K35/2 and K300/4. I've read the K17/4 is also modified but I cannot see the difference from the optical

Re: SMC Takumars vs. Pentax K's

For some lenses, yes, for others, no. FYI, the optical formulas presented on Boz's site are interesting and give some insight into the lens's design, but they are not complete optical formulas. Lens element and group configurations can be identical, but designs may still be significantly

Re: SMC Takumars vs. Pentax K's

Lens element and group configurations can be identical, but designs may still be significantly different due to different glass formulas surface figures. Bob... Indeed. This is the case of K17/4. Pentax public presentations of lenses (as reported in Japanese english-written Camerart magazine,

Re: SMC Takumars vs. Pentax K's

Thanks Andre, This one goes to the archives. Lasse From: Andre Langevin [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Saturday, April 10, 2004 7:33 PM Subject: Re: SMC Takumars vs. Pentax K's Lens element and group configurations can be identical, but designs may still be significantly