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Re: [OM] Bokeh

Subject: Re: [OM] Bokeh
From: Philippe <philippe.amard@xxxxxx>
Date: Thu, 21 Aug 2014 07:26:15 +0200
Agreed - and the color example is a sweet one.
But I like Tom in the that third shot all the same :-)

Amities
Philippe

Le 20 août 2014 à 23:23, Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx> a écrit :

> While you call the 35/2.0 the king of bokeh the third image of Tom drinking 
> coffee certainly doesn't illustrate it.  It's a great picture of Tom but the 
> tree in the background illustrates what I would call very busy bokeh. 
> <http://www.pbase.com/tinamanley/image/157064826>
> The highlights (those that aren't blown) image as distinct balls while some 
> branches image like squiggly worms.  Most of the background visual elements 
> are visible as distinct objects.
> 
> Good bokeh is very smooth and nearly featureless like the image that Mike 
> sent <http://tinyurl.com/o6ho3ze> that makes it difficult to find an edge 
> anywhere in the background.  But bokeh is a nebulous thing.  If the 35/2.0 is 
> considered the bokeh king I would suspect that it probably is so when wide 
> open or nearly so and with a background much closer than the tree behind Tom. 
>  Many lenses exhibit exemplary bokeh at a particular distance range from 
> subject to background but not others. Generally, lenses with many aperture 
> blades which tend to form a circular aperture will show good bokeh.  But 
> that's not always true. Some lens designs using aspherical elements just 
> don't seem to be able to make good bokeh ever.
> 
> If it was your intent to display good bokeh I think you also need 2 other 
> images to go along with the good bokeh image.  You need one showing greater 
> depth of field to be able to differentiate the effect of depth of field and 
> also one with shallow depth of field but with bad bokeh.  You already have 
> one with mediocre bokeh here.
> 
> Chuck Norcutt
> 
> 
> On 8/20/2014 4:40 PM, Mike Gordon via olympus wrote:
>> I like your shots and the bokeh is good.  Might be very easy to get
>> concept across with a  simple  smooth example.  The Tokina variant of
>> this lens is known as the "Bokina" though this is the Vivitar S1 version
>> with the same optics.
>> 
>> http://tinyurl.com/o6ho3ze
>> 
>> 
>> Almost No Monarchs again this year, Mike
>> 
>> 
>> PESO:
>> 
>> I took 3 photos this morning to try to illustrate what bokeh is, in answer
>> to a question from a beginning photographer.  I used the 35/2.0 (king of
>> bokeh) Summicron.
>> 
>> http://www.pbase.com/tinamanley/image/157064814
>> 
>> http://www.pbase.com/tinamanley/image/157064816
>> 
>> http://www.pbase.com/tinamanley/image/157064826
>> 
>> Hit Original to view them larger.
>> 
>> What do you think?  Do these illustrate bokeh?  What else would you suggest
>> to help her understand bokeh?
>> 
>> TIA
>> 
>> Tina
>> 
>> 
>> 
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