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Odd icicles

 
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rjlittlefield
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Joined: 01 Aug 2006
Posts: 17694
Location: Richland, Washington State, USA

PostPosted: Sat Dec 04, 2010 6:24 pm    Post subject: Odd icicles Reply with quote

It's been snowy here for the last few days, well below freezing for the first couple of days and then warming to melt some, freeze some.

Of course we developed icicles -- nothing odd about that.

But apparently the temperatures stayed right around freezing for long enough that the icicles evolved in some interesting ways I've not noticed before.







All were focus-stacked, to get enough DOF while keeping the background completely OOF. Shot through windows from inside a nice warm house, so both the icicles and I could be in our natural surroundings. Smile

Hope you find these interesting!

--Rik

Technical details: Canon 55-200mm EF USM at 200mm f/5.6 plus Kenko tubes, Canon 300D, Zerene Stacker.
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LordV



Joined: 22 Nov 2007
Posts: 1561
Location: UK

PostPosted: Sat Dec 04, 2010 11:28 pm    Post subject: Reply with quote

LOvely captures Rick.
Think you often get very odd structures in the ice if it goes though freezing and thawing cycles - it can almost look cellular.
Brian v.
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Craig Gerard



Joined: 01 May 2010
Posts: 2877
Location: Australia

PostPosted: Sun Dec 05, 2010 4:15 am    Post subject: Reply with quote

Rik,

The second one is especially fascinating!

What would happen if you applied cross-polarisation techniques to such a subject.

The only ice/snow I see in my part of Australia, is in the fridge freezer compartment Smile

Craig
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rjlittlefield
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Joined: 01 Aug 2006
Posts: 17694
Location: Richland, Washington State, USA

PostPosted: Sun Dec 05, 2010 10:42 am    Post subject: Reply with quote

Thanks for the comments, guys!

Craig Gerard wrote:
What would happen if you applied cross-polarisation techniques to such a subject.

I have no idea. I wondered about that too, but it was pretty inaccessible -- hanging a couple of feet outside an upstairs window with no easy way to get a polarizer on the back side.

This sounds like the sort of thing that LordV might have played around with?

--Rik
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LordV



Joined: 22 Nov 2007
Posts: 1561
Location: UK

PostPosted: Sun Dec 05, 2010 11:01 am    Post subject: Reply with quote

rjlittlefield wrote:
Thanks for the comments, guys!

Craig Gerard wrote:
What would happen if you applied cross-polarisation techniques to such a subject.

I have no idea. I wondered about that too, but it was pretty inaccessible -- hanging a couple of feet outside an upstairs window with no easy way to get a polarizer on the back side.

This sounds like the sort of thing that LordV might have played around with?

--Rik


No still haven't got any polarisation sheets. I do try to get a multi coloured object behind ice as it helps accentuate the structures within the ice.
Brian v.
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rjlittlefield
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Joined: 01 Aug 2006
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Location: Richland, Washington State, USA

PostPosted: Sun Dec 05, 2010 11:43 am    Post subject: Reply with quote

LordV wrote:
I do try to get a multi coloured object behind ice as it helps accentuate the structures within the ice.

Good point.

I was lucky in this case because in the background were some nice dark trees to make patterns in the ice.

The trick then was to tweak the camera position so the line of sight included only small branches, and to use the widest possible aperture so the background stayed more or less uniform gray. That's where the stacking came in. When I tried getting DOF by stopping down, the background went ugly.

--Rik
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Jbailey



Joined: 05 Jul 2008
Posts: 520
Location: Wisconsin, USA

PostPosted: Mon Dec 06, 2010 7:31 am    Post subject: Reply with quote

An easy way to put a LARGE polarizer behind the ice is to have a clear blue sky there that is at right angles to the sun.
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