snubbr.com

Using a polarizer or photoshop to add the polarization effect
So I did some research on polarizers and I was tempted to get that filter, but now I'm not so sure anymore. First, polarizers are only useful when polarized light are at a 90 degrees angle from my camera lens. Second, I read that photoshop can add that polarized effect with ease and it'll look realistic too. I think the only negative part of using photoshop to add the effect, is that I don't think it'll remove the reflection from windows and water. Am I correct with that assessment? I'm a bit torned in what I should do. Ideally, I don't want to spend the money on a good polarizer, but if it's mandatory to remove reflections then I might have no choice but to get one. What would you guys do?..

Comments (8)

Sgt_Strider wrote:.

What would you guys do?.

I'd buy the polarizer..

J. D.Colorful Colorado.

Remember.always keep your receipt, the box, and everything that came in it!..

Comment #1

I've never tried it myself (i.e., because I have a Nikon polarizing filter), but I also heard a pro photog suggesting the use of "polarizing sunglasses" as a temporary polarizing filter. I think that'd be very interesting to try..

Brandon..

Comment #2

Photoshop cannot remove reflections..

Photoshop can increase contrast and saturation in the sky, just as it can increase the contrast and saturation in anything. It can do a better job if you take a second shot exposed for the sky and merge the two. But it's not the same as a polariser, and it's a *lot* more work..

It's true that there are situations where polarisers aren't helpful, such as for skies directly opposite the sun; also they can't remove reflections from metallic surfaces. But that doesn't doesn't make them any less valuable - nothing works everywhere, does it?.

This is the best 'affordable' polariser:.

Http://hvstar.net/index.asp?PageAction=VIEWPROD&ProdID=12..

Comment #3

So I did some research on polarizers and I was tempted to get thatfilter, but now I'm not so sure anymore. First, polarizers are onlyuseful when polarized light are at a 90 degrees angle from my cameralens. Second, I read that photoshop can add that polarized effectwith ease and it'll look realistic too. I think the only negativepart of using photoshop to add the effect, is that I don't thinkit'll remove the reflection from windows and water. Am I correct withthat assessment? I'm a bit torned in what I should do. Ideally, Idon't want to spend the money on a good polarizer, but if it'smandatory to remove reflections then I might have no choice but toget one.



I'd get the filter..

It's not true that a polarising filter only works when the light is at 90 degrees to the camera. That's when the effect is maximum, but you can still get a substantial and useful effect in lots of different positions..

As you pointed out, adding the effect with PS is not going to be easy because a polarising filter affects different parts of the picture to different extents. Since it removes specular reflections it has a much bigger effect on the sky for example (reflections of sunlight from dust particles) than on shadows and non-reflective areas..

Best wishes.

Mike..

Comment #4

I use a gradient (100% to 0% effect) levels layer on the sky to approximate a polariser effect if I didn't use one (I need to get a filter for my current lens)..

I'm quite pleased with the results but I'm still getting a polariser...

Comment #5

Sgt_Strider wrote:.

So I did some research on polarizers and I was tempted to get thatfilter, but now I'm not so sure anymore. First, polarizers are onlyuseful when polarized light are at a 90 degrees angle from my cameralens. Second, I read that photoshop can add that polarized effectwith ease and it'll look realistic too. I think the only negativepart of using photoshop to add the effect, is that I don't thinkit'll remove the reflection from windows and water. Am I correct withthat assessment?.

You are correct - thus a true polarizer effect can NOT be replicated in photoshop. It's not just about darkening the sky - it's about removing/shifting reflections, cutting through haze, and saturating color. Any source that says a polarizer effect can be added easily in photoshop is not a source to be trusted (unless they are ONLY talking about the sky, which again, misses the point of a polarizer)...

Comment #6

If you intend to take many landscape photgraphs then a polariser is essential - PP can't replicate it.

Simon.

Http://www.landscapephotographyuk.com/.

North Wales photographs - Snowdonia & Anglesey..

Comment #7

Sgt_Strider wrote:.

So I did some research on polarizers and I was tempted to get thatfilter, but now I'm not so sure anymore. First, polarizers are onlyuseful when polarized light are at a 90 degrees angle from my cameralens..

No..

Second, I read that photoshop can add that polarized effect.

No..

With ease.

No.and it'll look realistic too..

No..

I think the only negativepart of using photoshop to add the effect, is that I don't thinkit'll remove the reflection from windows and water. Am I correct withthat assessment?.

Except for the "only" word. It won't remove haze. It won't enhance colors..

I'm a bit torned in what I should do..

It's up to you..

Ideally, Idon't want to spend the money on a good polarizer, but if it'smandatory to remove reflections then I might have no choice but toget one. What would you guys do?.

You have to realise that it WON'T remove reflections. Well, actually it would reduce some reflections, but if you think it will literally remove reflections, you will be disappointed. It won't remove reflections in mirrors or metalic surfaces. It won't remove ALL reflections on glass. It will be effective only at certain angles. It will be most effective at a certain angle vs the sun if shooting landscape..

What would you guys do?.

I've got 3 CP in my bag...

Comment #8

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.