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Cameras, Lenses and Accessories Discuss What do filters do?...What would a UV or a polarising filter do, or even a coloured one? and... do i need one? I ...

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Old 21-03-2006, 23:11   #1 (permalink)
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What do filters do?

What would a UV or a polarising filter do, or even a coloured one?

and...

do i need one?

I have a D50 with lit lens and a 70-300mm that takes a 62mm screw on filter.

I have seen a few bits about them but wondered if i would benefit from having one, i mainly want to photograph sports and landscape/type pictures
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Old 21-03-2006, 23:16   #2 (permalink)
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sorry thought i was posting in cameras and lenses section can someone move it for me, thanks
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Old 21-03-2006, 23:36   #3 (permalink)
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Old 21-03-2006, 23:40   #4 (permalink)
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ta
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Old 22-03-2006, 00:03   #5 (permalink)
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Being a novice on this area too, I have been given advice by my father-in-law and also seen it on lots of websites, to get skylight filters.
The main reason for these (anybody correct me if i'm wrong) is to protect your glass, i.e. scratch the filter and it'll cost you another £10-15, scratch the glass and your talking big bucks. Regarding the others you mention, i'll step aside and let the big boys answer that one.
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Old 22-03-2006, 09:29   #6 (permalink)
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uv ones also reduce a little haze

polarisers tend to deepen colours, esp blue skies and get rid of reflections

coloured ones are used to warm or cool photos and deeper colours were used in black and white photography to emphasise different tones by changing the recorded light.

sorry for the quick reply, im off to work.
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Old 22-03-2006, 09:51   #7 (permalink)
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I would suggest getting a UV filter to protect the lens and a circular polariser for occasional effect use. It's worth noting that a CP filter is fairly dark so will significantly reduce the amount of light entering the camera.

BTW, never use them at the same time.
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Old 22-03-2006, 10:06   #8 (permalink)
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Quote:
Originally Posted by SammyC
BTW, never use them at the same time.
Why is that??

Chris.
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Old 22-03-2006, 10:21   #9 (permalink)
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have a look at this Covers the basics pretty well.
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Old 22-03-2006, 10:32   #10 (permalink)
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Quote:
Originally Posted by ChrisB
Why is that??
They will get jammed together and become a b*tch to seperate

http://www.photo.net/bboard/q-and-a-...id=008525&tag=

Coloured filters aren't really essential these days as you can do so much more post processing work in Photoshop etc.

UV and CP filters work well for me.
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Old 22-03-2006, 18:46   #11 (permalink)
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Quote:
Originally Posted by evilowl
They will get jammed together and become a b*tch to seperate
A quick tip...before you put any filters on the camera lense or on another filter, if you draw around the filter threads with a pencil, the graphite acts as a lubricant and will allow for easy unscrewing when you wish to seperate them.

Make sure you blow any residue away after drawing and before screwing though
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Old 22-03-2006, 20:04   #12 (permalink)
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Great tip, thanks
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Old 22-03-2006, 21:17   #13 (permalink)
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Thanks for all the info guys thats great
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Old 23-03-2006, 14:04   #14 (permalink)
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Quote:
Originally Posted by Steve
A quick tip...before you put any filters on the camera lense or on another filter, if you draw around the filter threads with a pencil, the graphite acts as a lubricant and will allow for easy unscrewing when you wish to seperate them.
Another good tip if they do get stuck is to hold the filter flat against something like a fairly flat rubber shoe sole and twist. The rubber gives an even grip and presure to the twist and this will usually undo the most stubborn filters easily.

This public service broadcast has been brought to you by my old college teacher.
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