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[OM] Re: ZD 8mm fisheye

Subject: [OM] Re: ZD 8mm fisheye
From: "C.H.Ling" <chling@xxxxxxxxxxxxx>
Date: Fri, 27 Jan 2006 20:25:15 +0800
It is absolutely not the quality of ZD8mm, either flash or PS was used on 
their shot. Here are some photos I took with E-1 and ZD 8mm. Processed with 
PS CS2 no vignetting correction done.

F5
http://www.accura.com.hk/P1201881s.jpg

F5.6
http://www.accura.com.hk/P1212081s.jpg

F8
http://www.accura.com.hk/P1212048s.jpg

F6.3
http://www.accura.com.hk/P1212091s.jpg

C.H.Ling


----- Original Message ----- 
From: "Moose" <olymoose@xxxxxxxxxxxxxxx>

> Komtanoo Pinpimai wrote:
>
>>http://image.xitek.com/photo/200512/1393/139317/139317_1135703164.jpg
>>http://image.xitek.com/photo/200512/1393/139317/139317_1135695236.jpg
>>
>>the center seems to be brighter and more colorful, are they
>>photoshopped ? or the fisheye can produce these kinds of result ?
>>
> All super wide lenses produce images that are darker at edges and
> corners than in the center. It's a consequence of the physics of light,
> the details of which I used to understand. It's worse wide open and
> usually disappears by mid aperture, maybe f8 or so, depending on the
> particular lens.
>
> I know ZD lenses are supposed to pass on info about their vignetting
> characteristics to the camera and into the RAW files. It can then be
> corrected in one or another or both of the Oly RAW apps. Maybe in other
> RAW processors too?? It can also simply be corrected in a good image
> editor, using one's eyes and a radial gradiant, rather than info from
> the lens.
>
> Moose


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