[rollei_list] Re: Disturbing Lack of Traffic
- From: Richard Knoppow <dickburk@xxxxxxxxxxxxx>
- To: rollei_list@xxxxxxxxxxxxx
- Date: Sun, 17 Jun 2007 23:44:20 -0700 (GMT-07:00)
-----Original Message-----
>From: slobodan dimitrov <s.dimitrov@xxxxxxxxxxx>
>Sent: Jun 17, 2007 7:18 PM
>To: rollei_list@xxxxxxxxxxxxx
>Subject: [rollei_list] Re: Disturbing Lack of Traffic
>
>I had a 'flex, once upon a time. The highlights tend to be washed
>out, and the detail in the dark areas drops off fast. Otherwise very
>sharp lenses. Their contrast is that of 1960-70's Japanese glass.
>It's an image style that one has to have an acquired taste for.
>
>s.d.
>
I am puzzled when I see attributions like this made for lenses. I can
understand lack of shadow detail if a lens is very flarey because flare tends
to reduce shadow contrast but I can't understand how the lens could affect the
contrast of the highlights unless it had severe spherical aberration. That will
reduce overall contrast to some degree but especially highlight contrast.
However, spherical also reduces sharpness. I can't dispute that you have
observed this but I don't understand what optical mechanism is responsible.
--
Richard Knoppow
dickburk@xxxxxxxxxxxxx
Los Angeles, CA, USA
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