Archived posting to the Leica Users Group, 2006/12/15

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Subject: [Leica] IR Filters
From: faneuil at gmail.com (Eric Korenman)
Date: Fri Dec 15 14:08:17 2006
References: <90791582-010F-1000-97A2-B70D34CA4F72-Webmail-10018@mac.com> <01f401c71fd2$48498740$6401a8c0@FrankDell2>

or just convert to B&W which most of us anyway

Eric


On 12/14/06, Frank Filippone <red735i@earthlink.net> wrote:
>
> Yes, so?   So have others.  It is a combination of issues... IR content in
> the source, reflectivity of the cloth, the sensor.  If
> the issues do not align right ( or is that.. if the issues do not
> align  wrong....????)  that it becomes obvious and/or  also
> unacceptable.
>
> You will go ahead and be happy,, then your (Gran-) Daughter, Ms. Peggy
> Sue,  will show up and you will take a picture of her in her
> brand new ( 1st grade or HS) prom dress and the dress will have a magenta
> cast...... Will you be happy then?  You will say... but it
> never happened before...... Not really true, but it ALWAYS happens.  It is
> the degree to which the issues line up ( no, not solar
> flaring) that makes the result unacceptable.
>
> See Henning's response to this issue to get more or less the same
> response, but he is a bit less conservative than I .... suggesting
> the most likely place for a problem.... rather than my response which
> leaves no chance for taking your camera out to Aunt Louise's
> house and finding she wants pictures of her kids on a bright sunny day,
> outdoors, in their Black Wool, and White Cotton shirts, and
> you left your filter at home.......
>
> Get the dam$%^ filters for all your lenses and / or pressure Leica to put
> the filter coating on the sensor glass plate.
>
> Frank Filippone
> red735i@earthlink.net
>
>
> Frank, I shot a couple of pics with an M8 and 50/1.4 asph at a Leica days
> event recently, not an upgraded camera, shot picture of my
> wife 4 feet away wearing a solid black cloth coat, no evidence of any
> magenta cast at all and no filter at all on the lens???
>
> Scott
>
>
>
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>

In reply to: Message from s_gregory1 at mac.com (Scott Gregory) ([Leica] IR Filters)
Message from red735i at earthlink.net (Frank Filippone) ([Leica] IR Filters)