You don't have a clue. We were specifically talking about using
Auto-aperture M42 lenses or M42 bodies which support autoaperture.
It has ZERO to do with Pentax current (D)SLRS. Nearly every
M42 body equipped for autoaperture lenses I have ever encountered
DOES have focus aids of some sort and they all go out at F5.6
Or so.

Secondly, not that it matters, but brighter ground glass is
Not always easier to focus. This is not the same as opening
Up the lens on a given ground glass which is always easier way
To focus. Ground glass focussing ease is a combination of contrast
And brightness, not brightness alone.

jco

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of
Shel Belinkoff
Sent: Sunday, October 15, 2006 12:40 PM
To: Pentax-Discuss Mail List
Subject: Re: K1D aperture simulator, part Three (III)- NOT

<SIGH> & <LOL>

First of all, the newer auto focus cameras, including the DSLR's, don't
have split image finders as standard.  I'm not even sure that you can
get
one other than custom made.  Had you ever used a new camera you'd know
this. In addition, the screens, even the standard screens, are much
brighter than the screens on older cameras, like the Spotties, K1000's,
KX's, and so on.  So, it's pretty easy to see through the viewfinder at
smaller apertures compared to the earlier cameras.  Your lack of
experience
with contemporary Pentax cameras is showing.  You are speaking from a
position of ignorance - which is not a very strong position ;-))

Just for grins, I attached a ST 105/2.8 to my istDS, set the aperture to
F/8.0, and discovered that I had absolutely no difficulty focusing
quickly
and easily.  All the more interesting is that it's a dull grey, overcast
morning here and I was focusing on the tree in front of my office
through
window glass as well.

Shel


> J. C. O'Connell wrote:

> Yes but its harder to focus which makes it slower not quicker
> Especially at smaller fstops. Most split image and other focus aids
> In the viewfinders don't even work at F5.6 or slower so what
> You are saying makes no sense. Focus will be slower and less
> Accurate, and in low light your be making it harder to compose
> Too.



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