Archived posting to the Leica Users Group, 2014/03/03

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Subject: [Leica] What Are These White Dots?
From: kanner at acm.org (Herbert Kanner)
Date: Mon, 3 Mar 2014 22:23:14 -0800
References: <CAJ4y7gy9gg9TPHXwbs57n9_M7CsxpAq0ujtOSTgMusLNVEK6Aw@mail.gmail.com> <53151B51.4040403@lighttube.net> <CAJ4y7gy4xjOfH1tSHcx4hUCbOxZBC-XfBxCx8Zb0OwJTxsKiqA@mail.gmail.com>

If a bit of snow surface is flat and oriented so as to reflect an image of 
the sun to you, that image should be round?-I?m assuming Tina?s hypothesis.

Herbert Kanner
kanner at acm.org
650-326-8204

Question authority and the authorities will question you.




On Mar 3, 2014, at 5:01 PM, Robert Baron <robertbaron1 at gmail.com> wrote:

> Thanks.  What is of particular interest (or concern?) to me is their
> perfectly round appearance, which makes me think of individual pixels being
> overwhelmed.  I don't know enough about digital sensors to know if this is
> a common or even possible occurrence when photographing snow; it just
> struck me as odd.  I've never seen it before, in any digital images shot by
> anyone, that I can recall.
> 
> 
> ==On Mon, Mar 3, 2014 at 6:16 PM, Jim Nichols <jhnichols at 
> lighttube.net>wrote:
> 
>> Tina could well be correct.  I see none of these in the shadow areas.
>> They seem to be predominantly in areas of mixed sun and shadow, so those
>> in full sunny areas may not be distinguishable.
>> 
>> Jim Nichols
>> Tullahoma, TN USA
>> 
>> 
>> On 3/3/2014 5:04 PM, Robert Baron wrote:
>> 
>>> Please look at this Large; there are numerous small white dots in the
>>> lower
>>> left hand corner and others elsewhere, such as below the pot.  What are
>>> they, some sort of reflection due to the bright sun?  They are quite
>>> round,
>>> almost perfectly so, and that is what throws me.
>>> 
>>> http://gallery.leica-users.org/v/Bob+Baron/W_L3004267PorchPaper.jpg.html
>>> 
>>> (The shot was made with an M9, the conversion to b&w is via
>>> SilverEfexPro2.)
>>> 
>>> Thanks,
>>> 
>>> --Bob
>>> 
>>> 
>>> 
> 
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In reply to: Message from robertbaron1 at gmail.com (Robert Baron) ([Leica] What Are These White Dots?)
Message from jhnichols at lighttube.net (Jim Nichols) ([Leica] What Are These White Dots?)
Message from robertbaron1 at gmail.com (Robert Baron) ([Leica] What Are These White Dots?)