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[OM] Re: FYI - E-420

Subject: [OM] Re: FYI - E-420
From: "Leandro DUTRA" <leandro.gfc.dutra@xxxxxxxxx>
Date: Wed, 5 Mar 2008 10:57:03 -0300
2008/3/5, C.H.Ling <ch_photo@xxxxxxxxxxxxx>:
>
> It is equivalent 80mm F2, not 20mm

Yes, my bad!


> When you are talking about 60mm, there
>  is a 60/1.5 for the Pen, the coverage is larger than 4/3 and weight only
>  270g all metal, it is equivalent to 120mm F1.5 in 4/3!

Sweet.  Anyway, coverage is not the whole story: there may still be
vignetting and distortions because digital sensors woń't take the
angled light rays film takes.

Question is, how big would be the digital, near-telecentric,
weather-sealed, autofocus FourThirds equivalent?


> I don't think there is any difficulty to make wide angles for small sensors,
>  there is already a DZ8mm.

The difficulty is making them small and fast at the same time.  Small,
fast, wide, take two.

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