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From: ark@alice.UUCP (Andrew Koenig)
Newsgroups: net.rec.photo
Subject: Re: Is OM-4 Junk?
Message-ID: <4088@alice.UUCP>
Date: Thu, 1-Aug-85 14:08:11 EDT
Article-I.D.: alice.4088
Posted: Thu Aug  1 14:08:11 1985
Date-Received: Sat, 3-Aug-85 01:53:20 EDT
References: <54600009@trsvax>
Organization: Bell Labs, Murray Hill
Lines: 30

>>>
>>>	After reading a review of the Olympus OM-4 in
>>>Modern Photography, I thought that the spot metering
>>>system of this camera would be nice for Zone System
>>>photography.
>>
>>Good luck doing zone system with 35mm. How will you control development
>>for each shot?

> When shooting Kodachrome, development is controlled by Kodak.  Zoning for
> transparencies gives great results in the proper situations.  Are you a
> snob or what?  The zone system is a methodology for light control in all
> picture situations.  Just because Ansel's book only describes one method
> is no reason to put that method into the church services and delete all
> others.  The OM-4 is a very good camera for slides.

>					George Robertson
>				    ...ihnp4!sys1!trsvax!ger


No, he's not a snob.

The Zone System is a methodology for controlling both exposure and
development in order to obtain a negative that will cover the full
contrast range of the subject and will produce a good print with
minimum manipulation on normal-grade paper.

You measure the contrast range of the subject and use that to decide
how long to develop; you measure the absolute brightness of various
parts of the subject and use that to determine exposure.