Archived posting to the Leica Users Group, 1999/09/12

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Subject: Re: [Leica] iiif + elmar 50, 3.5 + delta 400 = !
From: "Dan S" <dstate1@hotmail.com>
Date: Sun, 12 Sep 1999 15:28:28 GMT

I experienced this bizarre form of shutter tapering in my IIIf and a cla 
cleared it up.....

It IS strange that the taper is not in a distinct vetical line across the 
film....

Dan


>
>lug- and other nuts,
>
>just got back the proofs of the first roll of film (delta 400) taken with
>my 'new' iiif + elmar 50/3.5. first impressions: the elmar is a fantastic
>lens! it's sharp, but seems to be less 'clinical' than the current
>summicron i use on my m6; the 'bokeh' with the latter lens when shot wide
>open is definitely more pronounced, more 'poetic,' however, and really
>makes a portrait pop against the soft blur of the background. for the most
>part, i had no trouble with exposure: for the majority of shots, i metered
>off my m6 as i wanted to make sure shutter speeds were on - which they
>certainly seem to be. only in a couple of cases, when i had to shoot at 100
>instead of 125 or at 25 instead of 30, did shots seem slightly over
>exposed.
>
>that said, i did experience one problem: on some seven or eight shots,
>there are what appear to be streaks running horizontally across the frame,
>as if the film were being wound over something, or as if a roller were
>being rolled over the film. in those shots, there are a series of visible
>horizontal lines that seem to run in groups, like a musical staff, across
>the picture. they are visible, both on the proof and in the negs,but arenot
>so pronounced as to obscure the image completely. obviously, however, they
>are unacceptable and i'd like to get rid of them.
>
>when i looked over the notes i took when making those pictures, i noticed
>that all of the shots in question were taken out of doors at either 1/500
>or 1/1000. none of the other images, shot at slower shutter speeds, were
>affected. does any one have any idea what this might be? could it be
>possible that the shutter curtain is making contact with the film as it
>opens and shuts? i can't imagine what else it might be since frames right
>next to the streaked ones are totally clean, no lines whatsoever. i suppose
>that if had something to do with the film being advanced, or what-have-you,
>those lines would appear over more of the shots, or, if not, at least not
>only over those shot at 1/500 and 1/1000.
>
>has anyone else experienced this problem? thanks in advance for any
>ideas/suggestions/solutions you may have.
>
>guy

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