Interesting observation - in a sense the droplets (rime) could be acting
like additional lens elements and altering the refraction of light. I am
hoping to work with the yellow filter a little more and if this turns up
again I'll turn off the mufti white balance to see if that affects it.
I have never seen this with red filters in the past.
Mark
On 1/28/2015 10:52 PM, Igor PDML-StR wrote:
Mark,
Your guess about the auto-WB compensating for the yellow light is very
plausible. I've seen this type of things happening.
If that's not the case, - I wonder if it is somehow a result of
optical interference on the thickness of some layer(s) of the flake.
It looks like the blue color is where there are some sort of "droplets"
on the snowflake. I wonder if it's the interference on the two
surfaces of those "droplets".
Nice image, as usual.
Igor
On Tue, Jan 27, 2015 at 7:38 PM, Mark C <pdml-m...@charter.net> wrote:
We had e a little snow on Sunday but it was mostly rimey and poorly
formed.
I took the opportunity to try using a yellow filter, just to
experiment. In
this shot the background is yellow but the crystal itself is mostly
blue -
maybe an artifact of having the multi while balance featured enabled.
At any
rate - it was something different :
http://www.markcassino.com/b2evolution/index.php/blue-snowflake
Watching the weather reports - I hope to try some more yellow snow shots
soon...
Mark
---
This email is free from viruses and malware because avast! Antivirus protection
is active.
http://www.avast.com
--
PDML Pentax-Discuss Mail List
PDML@pdml.net
http://pdml.net/mailman/listinfo/pdml_pdml.net
to UNSUBSCRIBE from the PDML, please visit the link directly above and follow
the directions.
