Re: Pentax lens lack of half stop detents

2002-12-17 Thread Scott Nelson
Hi Lon, I can think of this explanation: difference of 1/2 stop at f/11 - 22 is so small in absolute physical dimensions that they did feel that making halfstops there would not be repeatable enough due to mechanical nature of the aperture

Re: Pentax lens lack of half stop detents

2002-12-15 Thread frank theriault
Hi, Lon, I don't know why. But, having checked a few of my Pentax and Tak lenses, they all have 1/2 stop detents between all of the aperture numbers, except the last (smallest) stop, where there is no 1/2 stop detent. For lenses with f16 as the smallest aperture, there is no 1/2 stop detent

Re: Pentax lens lack of half stop detents

2002-12-15 Thread Christian Skofteland
. Christian Skofteland [EMAIL PROTECTED] - Original Message - From: frank theriault [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Sunday, December 15, 2002 11:29 AM Subject: Re: Pentax lens lack of half stop detents Hi, Lon, I don't know why. But, having checked a few of my

Re: Pentax lens lack of half stop detents

2002-12-15 Thread frank theriault
Hi, Christian, You know, you're right! I too, have that doggie 135mm bayonet, and 1/2 stops thoughout. The rest of my Taks and Pentax are 1/2 stops except a full stop, just before the smallest stop. BUT, to further confuse things, my old 3.5 200mm Takumar pre-set, has full stops throughout

Re: Pentax lens lack of half stop detents

2002-12-15 Thread Frantisek Vlcek
Sunday, December 15, 2002, 4:40:28 PM, Lon wrote: LW I'm not going to rummage through my lenses, LW but on recollection alone, every Pentax Prime LW in the household lacks detents at the half-stop LW between f11 and f22. Not so for most third party LW lenses I own. LW Anyone know why? A subtle