My experience (at infinity) and Modern photography test (at around 1:50)
results told me the 100/2 was sharper than the 90/2 in f2 and f2.8.
C.H.Ling
----- Original Message -----
From: "Gary Reese" <pcacala@xxxxxxxxxxxxx>
To: <olympus@xxxxxxxxxxxxxxx>
Sent: Saturday, May 05, 2001 1:08 AM
Subject: Re: [OM] 100/2 vs 90/2
> It is generally accepted (and test results bear it out) that you get
> softer f/2 to f/2.8 results with the 100mm f/2, which may be preferred
> for portraiture, esp. of women. At those apertures, contrast is "high"
> for both, but resolution is lower in the 100mm.
>
> Both have floating elements, so close focusing distances shouldn't lend
> a user to favoring one or the other, unless they need to get towards the
> 1:2 point (which is the domain of the 90mm). Published test results show
> the 90mm as having better performance at far distances, which PROBABLY
> matches the characteristics of the 100mm f/2, although I've never read
> of anyone testing that.
>
> Gary Reese
> Las Vegas, NV
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