Re: PESO - Blue Snowflake

2015-01-30 Thread Attila Boros
Interesting way to get a yellow gradient background. Can't explain the
blue color, but it looks nice.

On Wed, Jan 28, 2015 at 2:38 AM, 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

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Re: PESO - Blue Snowflake

2015-01-29 Thread Mark C
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





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Re: PESO - Blue Snowflake

2015-01-28 Thread Igor PDML-StR


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


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PESO - Blue Snowflake

2015-01-27 Thread Mark C
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

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Re: PESO - Blue Snowflake

2015-01-27 Thread Daniel J. Matyola
Very nice image indeed!

Dan Matyola
http://www.pentaxphotogallery.com/danieljmatyola


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


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