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 Post subject: Polarizing Filters
PostPosted: Mon Jan 21, 2008 1:03 am 
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Joined: Fri Dec 21, 2007 7:35 pm
Posts: 232
Location: Caracas, Venezuela
I read what Gordon said about polarizing filters with his photos from the bolivian altiplano and I remembered that I hadn't tried this filter with my 40D. I used it the last time on my Rebel K2 film camera and the results were variable since the 28-90mm USM had a rotating front element and it was a pain in the neck to make it work.
Today I tested it and here are the results.

Image

ISO 100
1/60 sec
f4 @ 28mm
Aperture priority

Image

ISO 100
1/100 sec
f11 @ 30mm
Aperture priority
Auto levels on both with CS3
No color editing

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 Post subject:
PostPosted: Mon Jan 21, 2008 1:06 am 
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Joined: Thu Jan 17, 2008 10:50 pm
Posts: 249
Location: New South Wales, Australia
I really like the first one.

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 Post subject: This one too
PostPosted: Mon Jan 21, 2008 1:12 am 
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Joined: Fri Dec 21, 2007 7:35 pm
Posts: 232
Location: Caracas, Venezuela
This one too but I'm no sure about the filter if it really worked here.

Image

ISO 400
1/100 sec
f4 @ 28mm
Auto levels in CS3
Aperture priority

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my flickr


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 Post subject:
PostPosted: Mon Jan 21, 2008 1:24 am 
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Joined: Thu Jan 17, 2008 10:50 pm
Posts: 249
Location: New South Wales, Australia
Ahh naa I don't think it went too well in that photo because i'm guessing the sky wasn't too blue and then when it was blow down in the right hand side it kinda pulled it out to much and it just looks a little odd.

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 Post subject: Re: This one too
PostPosted: Mon Jan 21, 2008 9:30 am 
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Joined: Wed Jan 03, 2007 1:17 pm
Posts: 411
Location: Colchester - UK
Camut wrote:
This one too but I'm no sure about the filter if it really worked here.

Image

ISO 400
1/100 sec
f4 @ 28mm
Auto levels in CS3
Aperture priority


Where was the sun located in relation to view seen in this photo? (I'm assuming that's the moon in view) The polarising effect varies depending on the location of the sun. Luminous-Landscape shows a good way to work out which part of the sky will be most polarised; If you make a gun with your index finger and thumb (so they are at right angles to each other) and then point your index finger at the sun. The area of the sky where your thumb is pointing is the part that will be most polarised. This also applies to the path that your thumb points to when you rotate your wrist through 180 degrees.

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 Post subject: The sun
PostPosted: Mon Jan 21, 2008 12:58 pm 
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Posts: 232
Location: Caracas, Venezuela
This is a view of the NNE part of the city. The sun is in the far left (W) at sun set.
Colors at the far right of the photo were richer than that. For me the image seems washed out and not with the real colors it had.
That's why I'm telling the polarizer didn't work out, it just didn't change the blue in the landscape. What went wrong if the index is pointing left? Not enough sun?

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Carlos - Caracas Venezuela
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my flickr


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 Post subject:
PostPosted: Mon Jan 21, 2008 8:50 pm 
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Joined: Tue Nov 08, 2005 3:32 pm
Posts: 9952
Location: Queenstown, New Zealand
Sometimes poalrising filters can have quite unexpected results, especially after the sun has set - it's not always about making a sky deeper blue...

If the effect isn't a strong as you remember from film days, I'd also recommend shooting in daylight white balance and maybe even applying a little negative EV...


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 Post subject:
PostPosted: Tue Jan 22, 2008 9:04 pm 
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Joined: Fri Nov 30, 2007 11:18 pm
Posts: 131
Location: Canada
The first shot is really beautiful !! :)

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 Post subject: The Filter
PostPosted: Tue Jan 22, 2008 10:33 pm 
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Joined: Fri Dec 21, 2007 7:35 pm
Posts: 232
Location: Caracas, Venezuela
Andy wrote:
The first shot is really beautiful !! :)


I really think it's because the filter worked there and the colors are very bright... I'll try to learn some more on the right use of this filter.

I'll do what Gordon advised and publish some results here.

Cheers

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Carlos - Caracas Venezuela
EOS 40D
Tamron 17-50mm f/2.8 XR Di II LD/50mm f1.8II

my flickr


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 Post subject:
PostPosted: Thu Jan 24, 2008 12:35 pm 
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Joined: Mon Jan 21, 2008 1:27 am
Posts: 5
I usually rotate my filter to make sure I get the best shot.

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