I was recently looking for stepping ring with the smaller diameter 50mm and
found a few examples on that auction site, so there must be some lenses with
a 50mm filter diameter.
I needed the 50mm ring to use as a retaining ring for a LF lens which has a
50x1mm mounting thread.
...Wayne
-----Original Message-----
From: olympus
[mailto:olympus-bounces+wayne.harridge=structuregraphs.com@xxxxxxxxxxxxxxxxx
] On Behalf Of John Hudson
Sent: Friday, 28 August 2015 10:58 PM
To: Olympus Camera Discussion <olympus@xxxxxxxxxxxxxxxxx>
Subject: [OM] camera lens filters
Volume 24 of the Canadian "Photo News" magazine carries an article part of
which reads:
"One more number should be found on your lens. It is usually preceded or
followed by the symbol Ø. It is the size of the filter needed for that lens.
So, on a 50mm lens the filter size will /*never*/ [sic] be 50mm , as this
filter size doesn't exist. Most likely, you will find a Ø52 or a Ø49."
Question: why no 50mm filter size?
I have done an extensive google search and have not found an answer.
jh
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