pottyman@xxxxxxxxxx wrote:
>I was just wondering
>What is Bokeh????
>
>
I can't resist saying, considering your e-mail name, that I installed a
new, water saving toilet today.
As to your question, I've compiled some posts from when David C. asked
this question about a month ago:
Moose
> ____________________________________________
> Piers Hemy wrote:
>
>>Bokeh - bokeh, from japanese boke, unsharp. The appearance of the
>>out-of-focus areas of a photographic image. Also, the rendition of
>>out-of-focus image areas by a particular lens, i.e. a lens with a pleasing
>>out-of-focus rendition is said to have 'good bokeh.'
>>Try this link (the source of that definition) for a varied background -
>>http://www.bokeh.de/en/ although his link to Harold Merklinger's
>>(recommended) PDF on the subject is out of date, and should be -
>>www.trenholm.org/hmmerk/ATVB.pdf
>>
>>Piers
>>
> ____________________________________________
> C.H. as posted some bokeh comparison photos
> <Shatcho@xxxxxxx%20wrote:%0A%0Ahttp://www.accura.com.hk/OM/bokeh.htm>
> that I find quite instructive. Take a look at his pics paying
> attention to the background. Some are smoother than others and some
> just different from each other without one being clearly better.The
> 50-250mm has a rep for bad bokeh and the test shot confirms it
> <http://www.accura.com.hk/OM/bokeh/50250.jpg>. Staring at that
> background could make one bilious.
>
> 1. Some say that bokeh is almost entirely a result of focal length,
> distance and f-stop.
> 2. Others say the aperture shape is significant.
> 3. Some that aperture placement within the lens makes a difference.
>
> 1. C.H.'s samples make clear that #1 is not true, at least with
> complex lens designs. Those are significant factors, but not the whole
> story.
> 2. One of the bokeh sites on the web, the trenholm pdf above, shows
> that a triangle shaped aperture is definitely different than smoother
> shapes.
> 3. I suspect this may be the problem with the 50-250
>
> Moose
> ____________________________________________
>
>Bokeh means 'confused' or 'confusion'. Viz 'jisa bokeh' ie jet lag. In this
>context it refers to the out-of-focus images of the image, specifically the
>'smoothness' or otherwise. Certain lenses are reknowned, apparently, for their
>performance in this respect.
>
>Rgds
>
>Peter
>____________________________________________
>
>
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