Looks like specular highlights. A very high intensity small spot that
is creating some aberrations, perhaps in the lens coating, that was
not designed for because the lens engineers didn't design for such an
unusual situation. I've gotten something similar when shooting sand
in the bright sun. A very bring spot of sun will bloom out and make
these little discs of light, although not colored as in this example.
Here's an example that might be related; don't know for sure.
http://www.120scan.us/i/W2034914b.jpg
This is dew on a spider web.
Warren
On Mon, Sep 1, 2008 at 3:40 AM, Chuck Norcutt
<chucknorcutt@xxxxxxxxxxxxxxxx> wrote:
> Ooops. I forgot to comment on the wierd out of focus highlights. I
> haven't a clue.
>
> Chuck Norcutt
>
> Peter Klein wrote:
>> 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.html>
>>
>> Now, check this out:
>> <http://gallery.leica-users.org/v/pklein/album170/P8312345GirlSlide-w.jpg.html>
>> 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.html>
>>
>> A couple more scenes from the park with the 135:
>> <http://gallery.leica-users.org/v/pklein/album170/P8312358SGalBleachers-w.jpg.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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