[pure-silver] Re: Possible optical defect caused by hair or dust within lens?
- From: Eric Nelson <emanmb@xxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Sat, 7 Nov 2009 09:21:51 -0800 (PST)
The photo showing the defect doesn't tell us it's orientation relative to the
film. Is the long mark running lengthwise? My first guess, since you've not
scanned the film yet, is a processing problem such as stabilizer/final rinse
marks. Scanning the film will tell u if it's a print issue or film. You need
more info to make any real guesses.
________________________________
From: Tom Kershaw <tom@xxxxxxxxxxxxxx>
To: pure-silver@xxxxxxxxxxxxx
Sent: Sat, November 7, 2009 8:05:28 AM
Subject: [pure-silver] Possible optical defect caused by hair or dust within
lens?
My posting on APUG hasn't generated anything by way of a response, and as there
isn't total overlap between pure-silver and APUG I thought I should post here.
http://www.apug.org/forums/forum40/68152-odd-higher-density-marks-ra-4-print-probably-optical-issue.html
and the image links:
http://www.tomkershaw.com/apug/rf645_65mm_hair.jpg
http://www.tomkershaw.com/apug/strange_mark_kp800.jpg
As the density marks do not appear to be visible in all prints from the RF645
negatives and do not occur with my Bronica SQ negatives, perhaps the hair which
is within the lens generates the defect depending on the light direction.
Tom
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