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[OM] Re: Erwin Puts on the E1, Four Thirds, Olympus

Subject: [OM] Re: Erwin Puts on the E1, Four Thirds, Olympus
From: Joel Wilcox <jowilcox@xxxxxxxxxxxxxxxxxxx>
Date: Fri, 27 May 2005 14:02:02 -0500
OK thanks.

But Puts' article is not simply about the lenses, but about the synergy, if 
you will, of the lens with a camera designed explicitly for it.

Joel W.

At 08:33 AM 5/27/2005 -0700, you wrote:

>It describes the need to design a lens so that the rays hitting the
>sensor are as nearly parallel as possible because of the recessed
>nature of the sensor site. Telephoto lenses do that anyway. Wide
>angle lenses tend to have diverging rays hitting the film plane, but
>with a sensor it causes problems like color aberration and light fall
>off. Virtually every new wide angle lens designed since digital by
>any manufacturer has had this in mind. The result is wide angles
>lenses that have a deeper retrofocus and are larger in size. What is
>particularly offensive is that Olympus marketing implies that it is
>something they invented and apply to all their lenses, designed for
>digital from the ground up and people accept it.
>
>
>
>Winsor
>Long Beach, California, USA
>
>
>
>
>On May 27, 2005, at 5:15 AM, Joel Wilcox wrote:
>
> > I guess I could look it up, but he mentions "telecentricity" of the
> > E-series lenses.  Can anyone explain what that means?



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