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From: nxs@fluke.UUCP (Bruce Golub)
Newsgroups: net.rec.photo
Subject: Re: vibration in slr cameras
Message-ID: <287@tpvax.fluke.UUCP>
Date: Mon, 4-Jun-84 13:37:24 EDT
Article-I.D.: tpvax.287
Posted: Mon Jun  4 13:37:24 1984
Date-Received: Wed, 6-Jun-84 06:48:17 EDT
References: <697@decwrl.UUCP>
Organization: John Fluke Mfg. Co., Everett, WA
Lines: 37

I agree with the assesment in the Lieca publication; all this take about
mirror slap-back and focal plane blur is really nonsense. So is this
affliction for tripods. Don't get me wrong, tripods are required in some
cases but, for speeds beyond 1/60th of a second they are getting in the way. 

Taking a tip from marksman: take a deep slow breath, hold it, squeeze (press
firmly with a consistant force) the shutter as you start to hold your
breath, resume breating.

As for using a medium aperature for clarity, never heard of that until I
started reading this group. Does someone have a logical (i.e. the physics of
why this is). Sounds to me like someone is going off on a mislead tangent.

Also,in selecting a film for maximum sharpness I selected Ilfords (although
any manufacturer produces a simular type of film and developer, almost) FP4,
a slow-medium speed (asa 125) fine grain film, developed in Ilfords
Microfine, High energy developer, that allows the film speed of FP4 to be
increased to ASA 200 with a loss of sharpness (you may actually go as high
as 320, but you're losing the fine grain). In addition, I use the Microfine
developer in a diluted solution ( 1 : 1 ), which the manufacturer claims
(and I also concur) increases the accutance of the film. 

As for the camera and equipment end of it, I would recomend that you use
good-quality (at least the manufacturers lens, as apposed to bargain brands)
lens, with a fixed focal lenth (sorry zoom lovers, they are great but have
their limitations). Wide angle lenses (for what I know) are not less sharp
then normal or telephoto types. It may appear that way because objects are
smaller in relation to the film size and hence require significantly more
enlargement to be the same size as an object taken through a normal lens.


well what do I know anyway,

Bruce Golub
John-boy Mfg. etc.