[Leica] IMG: Abstract crow

[hoppyman at bigpond.net.au (Geoff Hopkinson)]

Peter you are seeing chromatic aberration, easily visible in your 100% view.
That's why the best and most expensive Teles have apochromatic correction;
guess who makes them ;-) 

Cheers
Geoff
http://www.pbase.com/hoppyman/e
http://gallery.leica-users.org/v/gh/

-----Original Message-----
Subject: [Leica] IMG: Abstract crow

Today I experimented with an old 135/3.5 Olympus OM tele on the 
E-510.  It's like using a 270mm lens on a 35mm camera. Manual focus, manual 
stop-down, aperture priority metering, and in-body image stabilization. I 
focused wide open, then counted clicks down f/8 to shoot.

This is the best shot from today, a natural abstract with a crow and some 
electrical wires:
<http://gallery.leica-users.org/v/pklein/album170/P8312368CrowWires-w.jpg.ht
ml>

Now, check this out:
<http://gallery.leica-users.org/v/pklein/album170/P8312345GirlSlide-w.jpg.ht
ml>
Behind this typical childhood scene is a weird optical effect. Out of focus 
highlight disks are greenish donuts surrounding a reddish core. Here's a 
1:1 crop showing the effect more clearly.  See the highlights on the 
woman's glasses, bolts and washers on the bench, and cris-crosses on the 
fence behind.
<http://gallery.leica-users.org/v/pklein/album170/P8312345CrazyChroma.jpg.ht
ml>

A couple more scenes from the park with the 135:
<http://gallery.leica-users.org/v/pklein/album170/P8312358SGalBleachers-w.jp
g.html>
<http://gallery.leica-users.org/v/pklein/album170/P8312354ShihTzu-w.jpg.html
>

Focusing is difficult.  If I keep using this lens, or my 100/2.8, I'm going 
to want a focus confirmation chip on the lens adapter, and/or a Katz Eye 
screen.  Anyone with experience with either of these--how well do they work?

--Peter


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