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Old Apr 2, 2007, 2:36 PM   #1
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I'm still learning my D80.... We went to the beach the other day and I snapped a few pix with my Tamron 19-35 F3.5-4.5 and my 77mm polarizing filter.

I am still new to this, I've never used a filter before, besides the protective UV filters (clear). I thought thta a polarizing filter was supposed to give a better photo overall. And it seems I got clearer color but a darker picture. What am I doing wrong here? Is it possible that the Polarizing lense was too dark? or too strong for what I want. Comments & suggestions please.

These are resized for upload and watermarked (My friend has had his pics lifted before and learning from his lessons I try to water mark most of the uploads)


I likebothpix but to me there is something wrong here... and I can't quite figure it out.






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Old Apr 2, 2007, 2:37 PM   #2
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similar scene without the filter



The filter is a Merkury Optics 77mm F-DL (I'm on a budget, these are ebay filters)
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Old Apr 2, 2007, 9:00 PM   #3
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AFAIK polarizers work best to (1) reduce glare from reflecting surfaces and (2) heighten contrast but the effect for (2) when shooting sky is most pronounced when the sun is at a 90 deg. angle to your shot.

Looking at your pics, it looks like some glare was reduced in the little pools in the foreground, but I don't see where the sky benefitted much. Perhaps this was not shot in the optimum direction to take advantage of the polarizer?

FWIW The polarizers I know of old (I have not shot with one since SLR days, many years ago) would spin around to allow for best effect. Your first pic seems to have a greenish cast too. I don't recall having this with film, but maybe the color could be corrected with a different WB setting or modest post processing. HTH
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Old Apr 3, 2007, 11:11 AM   #4
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Is your polarizer a circular polarizer, or a linear polarize

the later is really only good for 35mm film cameras

with the circular polarizer you slowly rotate it looking

in the viewfinder until you get the desired effect of

reductionof reflections of a shiney surface or

darkening/lightening of blue sky.

http://www.intro2020.co.uk/pdf/Hoya.pdf



I remember years ago when I had a linear polarizer

on my 35mm film slr, (and it rotated as well) that it

had the effect of making the sea look green and enhanced

the green colours in a scene as well as reducing reflections......musket





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Old Apr 3, 2007, 11:12 AM   #5
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Old Apr 3, 2007, 11:14 AM   #6
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Old Apr 3, 2007, 11:44 AM   #7
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WELLL I looked at my lenses again and I used the WRONG filter

F-DL they say is for flourescent lighting, the PL is what I should have used and looking at it, the lense does have the ability to spin... I'm guessing it's a CPL?

forgot to add, it's a linear lense, not circular looks like I will need to rebuy.

Well that gives me an excuse to go and take more pix :|



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Old Apr 8, 2007, 6:20 PM   #8
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the fluro lighitng ilter explains the massive change in colour temp over both shots

ken
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