snubbr.com

When and why use polarizer
I've seen pictures taken with polarizing filter, and loved thdm. But I know nothing about them:when and why use them. Could you give me few tips please?..

Comments (14)

The first use of a polarizing filter is to reduce glare. that is the glare from water cars or any other shiny surface. if you take pic of a pond on a sunnny day with no wind you end up with great picture of the surface. however, if the water is fairly shallow and you put a poarizer on the lens the glare is gone and you will see some details of the bottom, depending on the water depth..

Another use is to intensify the sky. on a sunny day take a pic of the scene that has a lot of blue sky, antd that is what you get -blue sky. but add a polarizer and he sky becomes a much darker more intense blue..

Another use for a polarizer is to simply absorb light. the use of a polarizer means that any scene seen through a polarizer has it's light level reduced by 2 stops. this means that of you are ever in a situation that you are shooting at f5.6 and getting to much dof then add the polarizer and you will now be shooting at f2.8 with the reduced dof...

Comment #1

Good answer Gary. Good to reduce glare off of metal objects.Let the light in!.

Comment #2

Also, using 2 on top of each other gives you a variable ND filter. Quality is so so though...

Comment #3

This one is often forgotten..

Under the right lighting, a CP will make the colors of flowers and vegetation more vivid.Warm regards,DOF..

Comment #4

Light reflected from non-metallic surfaces is polarized while that reflected from shiny metallic surfaces is essentially unpolarized..

Hence a polarizing filter can cut reflections from non-metallic surfaces (water, grass, glass, skin, etc.) but not from metallic surfaces illuminated with unpolarized light..

Removing the polarized light reflected from the surface of transparent materials lets you "see inside" the material..

Light scattered sideways from small non-metallic particles (fog, haze, dust, etc) is polarized hence can be selectively filtered (that's why the sky is polarized perpendicular to your shadow.).

Dave..

Comment #5

Read this article:.

Http://www.luminous-landscape.com/tutorials/polarizers.shtml.

Be aware that using a polarizer on a wide angle lens can sometimes create banding across a view of the sky. If you like the effect, then it is not a problem...

Comment #6

I don't have one, but it was explained to me that puting a polarizer on your lens is like putting on sunglasses..

The previous explaination about stopping down was told to me also. You must consider that also..

Mike.

Image control:Zoom outZoom 100%Zoom inExpand AllOpen in new window..

Comment #7

Check this out. It's a few pages, but quite informative.http://www.popphoto.com/pdfs/2002/0902/Polarizer.pdf.

Among other things, it explains about polarising light from the sky and reflections off metallic objects..

Cheers from John from Adelaide, South AustraliaJohn Harvey Photography http://johnharvey.com.auCanon 40D, Canon 20D & Fuji F10..

Comment #8

Wgc wrote:.

Good answer Gary. Good to reduce glare off of metal objects.Let the light in!.

Actually, no: polarizers do not work with uncoated metal, they work with just about everything else though..

When in use,under the right conditions, they can reduce the dynamic range in a scene to aceptable limits, especially by bringing down the luminance of the sky or reflections off shiny surfaces. They also eliminate (or reduce) glare off glass, so the contents of shop windows or display cabinets become clearly visible..

On the other hand, used with pools of water, they can result in unsightly sub-surface features (such as weed or algae) ruining the look of the shot...

Comment #9

Also remember that digital and film cameras use different filters. Digitals use circular filters and film cameras use linier filters...

Comment #10

Darrellb58 wrote:.

Also remember that digital and film cameras use different filters.Digitals use circular filters and film cameras use linier filters..

I don't think that's correct, SLR (D or not) need circular for AF to work, P&S can be used with linear or circular, no ?

Comment #11

Sigezar wrote:.

Darrellb58 wrote:.

Also remember that digital and film cameras use different filters.Digitals use circular filters and film cameras use linier filters..

I don't think that's correct, SLR (D or not) need circular for AF towork, P&S can be used with linear or circular, no ? .

You're right. The previous statement was incorrect. It's SLR vs non-SLR that's important, not film vs digital..

There's the odd exception with your statement where some SLRs cope ok with linear PLs, but it's generally best to assume they need a CPL to function properly. Non-SLRs are fine with linear PLs. I've had plenty of salesmen try to tell me that non-SLR digicams need CPLs. I suspect they believe what they're saying, but just don't know what they're talking about..

Cheers from John from Adelaide, South AustraliaJohn Harvey Photography http://johnharvey.com.auCanon 40D, Canon 20D & Fuji F10..

Comment #12

My answer was stated wrong again, I did not give all the information. Sometimes I do these things without thinking getting old I guess. Let'e see I put a polarizer on my lights and on my camera and do costume jewelry shots in studio no glare?Let the light in!.

Comment #13

Mikelis wrote:.

Wgc wrote:.

Good answer Gary. Good to reduce glare off of metal objects.Let the light in! .auCanon 40D, Canon 20D & Fuji F10..

Comment #14

Click Here to View All...

Sponsored Amazon Deals:

1. Get big savings on Amazon warehouse deals.
2. Save up to 70% on Amazon Products.


This question was taken from a support group/message board and re-posted here so others can learn from it.

 

Categories: Home | Diet & Weight Management | Vitamins & Supplements | Herbs & Cleansing |

Sexual Health | Medifast Support | Nutrisystem Support | Medifast Questions |

Web Hosting | Web Hosts | Website Hosting | Hosting |

Web Hosting | GoDaddy | Digital Cameras | Best WebHosts |

Web Hosting FAQ | Web Hosts FAQ | Hosting FAQ | Hosting Group |

Hosting Questions | Camera Tips | Best Cameras To Buy | Best Cameras This Year |

Camera Q-A | Digital Cameras Q-A | Camera Forum | Nov 2010 - Cameras |

Oct 2010 - Cameras | Oct 2010 - DSLRs | Oct 2010 - Camera Tips | Sep 2010 - Cameras |

Sep 2010 - DSLRS | Sep 2010 - Camera Tips | Aug 2010 - Cameras | Aug 2010 - DSLR Tips |

Aug 2010 - Camera Tips | July 2010 - Cameras | July 2010 - Nikon Cameras | July 2010 - Canon Cameras |

July 2010 - Pentax Cameras | Medifast Recipes | Medifast Recipes Tips | Medifast Recipes Strategies |

Medifast Recipes Experiences | Medifast Recipes Group | Medifast Recipes Forum | Medifast Support Strategies |

Medifast Support Experiences |

 

(C) Copyright 2010 All rights reserved.