[Leica] IMG's plus advice needed - Guy, girl, bokeh (Tim Gray)

[tgray at 125px.com (Tim Gray)]

Yup it happens with all lenses.  Some might be more prone to it due to
design; I don't know.  That's probably the case.  Anyway, here's a
shot of the 50 ASPH wide open with christmas lights in the background.
 You can see the same thing going on, though (subjectively) not as
bad.

<http://www.flickr.com/photos/tgray1/3092117057/>

On Tue, Mar 24, 2009 at 11:12 PM, bob palmieri <rpalmier at depaul.edu> 
wrote:
>
> On Mar 24, 2009, Tim Gray wrote:
>
>> Are you referring to the non circular shape of the out of focus
>> highlights? ?If so, that will happen on most large aperture lenses
>> wide open. ?It has to do with the angle of the light is coming in.
>> Take your lens, look at it off axis (like 25-30 degrees off) and note
>> that you can't see the full aperture because of the angle. ?That will
>> probably happen with almost any fast 50 you shoot with.
>
> Yeah... the overall shape thing made me think about the image of the
> physical aperture from an off-axis point of view.
>
> Thing is... I'm wondering why I haven't seen it in any snaps I've shot with
> other fast lenses; I'm gonna hafta try to smoke it out of some of the other
> glass in the closet.
>
>>
>> If you are talking about the bright ring on the outer part of the out
>> of focus highlights, that has to do with lens design and another fast
>> 50 might work better for you. ?The Zeiss 50/1.5 might satisfy you. ?I
>> think it has to do with correcting spherical aberration, which the
>> Zeiss has a lot of, so it has smoother out of focus highlights (behind
>> the plane of focus). ?It also has focus shift :)
>
> Yeah... that excessive focus shift business can be a dealbreaker.
>
>>
>> I assume you were joking about bokeh being the cause of the lack of
>> view on the Guy picture :)
>
> Yeah...
>
> Bob Palmieri
>
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