Archived posting to the Leica Users Group, 2009/05/31

[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]

Subject: [Leica] Intro and question.
From: wtallman at (William D. Tallman)
Date: Sun, 31 May 2009 21:09:42 -0700

I've been lurking for a while and have found the thread on anti-aliasing
filters very instructive.

I read here because I stumbled across a reasonable deal on a IIIf and
Summitar, now at DAG; seems like it's time to dig out the darkroom
stuff, get some TriX, and see how well I do at street shooting.  I
suppose that's just justification, given that I've never been
innoculated against the Leica-bug ;)  But now there are some real
issues, so it seems.

I'm (still) trying to learn something about photography, and have gotten
a Canon 40D and some lenses, including a 100/2.8 macro; instant feedback
teaches more effectively than waiting for film to be processed long
after the scene is gone.

It seems that I can't get a really sharp image.  Using a well weighted
tripod, the macro lens at f5.6, MLU, remote release, and shooting a
stationary well detailed target at about 15 feet, manual focusing via
Live View at maximum magnification, I could not manage to get a sharp
image.  Taking shots and reviewing them the same way shows no change.

Absent the removal of the AA filter, or an investment in a Leica system,
am I unlikely to ever get real sharpness from this (or any comparative)
digital gear?

I follow the anti-aliasing arguments, but certainly don't have the
necessary information to make any judgment.  If the site with the
comparisons between Nikon D200's is to be believed, the anti-aliasing
filters are well below the Nyquist limitations, I would think.  Ergo, the
argument about software capping output at that level is irrelevant.  Or
am I not even in the right parking lot, let alone ball park?

I'm thinking about acquiring a Pentax K7 to use with all my K series
glass (have LX, etc), and so either of these two cameras might be a
candidate for a filter removal.  I can't imagine that neither Canon nor
Pentax have sensors equal in capability to the Nikon D200.  The question
might be whether or not anyone knows how to get rid of said filters.

Is this something that someone who can dismantle and reassemble a
wrist watch movement might be able to do, given the tools, etc?  Or does
anyone know?

Thanks for reading.

Bill Tallman

Replies: Reply from at (Douglas Sharp) ([Leica] Intro and question.)
Reply from imagist3 at (George Lottermoser) ([Leica] Intro and question.)
Reply from grduprey at (grduprey at ([Leica] Intro and question.)
Reply from richard.lists at (Richard Man) ([Leica] Intro and question.)
Reply from mingthein at (Thein Onn Ming) ([Leica] Intro and question.)