On Apr 22, 2009, at 16:46 , Bruce Dayton wrote:
FWIW, I am quite astigmatic - I wear corrective contacts and I have
no trouble at all focusing on stock *istD, K10D and K20D screens - do
it all the time. Maybe with glasses any movement of the lens pushing
against the finder could cause a problem?
That's just it. All my prescription glasses were stolen with my
cameras last October, and I haven't replaced them yet. (Must do, must
do)
I'm fine using readers for most everything close (have lots of 'em
from 1.25 to 7.00) and thought I really only needed prescriptions for
seeing signs far away when I'm driving at night (really far away) and
the leaves on distant trees, etc.. See, until 15 years ago, I had
20:5, 20:10 vision, and the memory of that compels me to maintain that
acuity with glasses, bifocals so I can see the dashboard clearly as
well. But license testing shows I don't "need" glasses for driving. So
I really only need readers for 90% of my visual collection.
I'm wearing 1.25s for using the computer right now, 1.50 or 1.75 for
reading. But none of those correct for my mild astigmatism. So I
should go get a pair of corrective lenses ASAP. Huh?
Wednesday, April 22, 2009, 3:54:15 PM, you wrote:
G> On Wed, Apr 22, 2009 at 03:33:04PM -0700, Joseph McAllister
scripsit:
On Apr 22, 2009, at 13:21 , Toralf Lund wrote:
I'm also find it hard do choose the appropriate step on on the
viewfinder focus setting (on the one body I have where there is
actually such a setting.)
I think this is caused by an astigmatism, from which I suffer to
some
degree.
G> I'm also (mildly and variably) astigmatic. I wonder if that's
the core
G> of the problem.
G> My glasses do correct for it, and I wear them when using the
camera.
G> But it could easily (change of angle on the glasses lens) still be
G> affecting things.
Joseph McAllister
pentax...@mac.com
http://gallery.me.com/jomac
http://web.me.com/jomac/show.me/Blog/Blog.html
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