YES, Of course I know that, but the METERING is done stopped down which can cause HUGE losses in metering sensitivity at small f-stops. That's one of the reasons why stop down ***metering**** went out of style over 30 years ago from PENTAX as well as everyone else....
-----Original Message----- From: Kostas Kavoussanakis [mailto:[EMAIL PROTECTED] Sent: Sunday, September 18, 2005 5:34 AM To: [email protected] Subject: RE: Pentax K 2.5/200mm On Sun, 18 Sep 2005, J. C. O'Connell wrote: > I KNOW the difference between open apeture metering and what it > means in low light. Have you understood that the lens only stops down *momentarily* to meter and again *momentarily* to take the picture, and that at all other times it is open? Just wondering, Kostas
