Dealing with haze
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Old 07-31-2009   #1
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Default Dealing with haze

My limited understanding is:

- Pre-taking the photo: A UV filter will help. Is that correct. What about a CPL, will it be of any use in this situation/weather.

- Post taking the photo (without a UV filter): Tried Levels/Curves with mixed results.

Appreciate your input into the matter.

Thanks

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Old 07-31-2009   #2
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Default Re: Dealing with haze

I think the use of a filter for correction is dependent on what kind of haze you are dealing with. UV is light beyond the visual spectrum so I don't know that it will have much effect on a photo sensor. Film reacted adversly to UV light and translated that as "haze" when developed.

When the haze is naturally occurring moisture rising from the ground, as it does in early morings your image may appear un-naturally cool, much like underexposed images. A skylighter filter can help clarify that.

Haze caused by stirred up dust and dirt (something I deal with in dirt bike racing and horse shows) can be minimized in PP by adjusting the contrast. I've used auto-contrast to almost instantly remove fog and dusty conditions.

Haze caused by pollution, or smog? Got me. Too many elements floating in the atmosphere with different reflective qualitites and temps. for me to make a guess.

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Old 07-31-2009   #3
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Default Re: Dealing with haze

Cheers, Steve.

Was referring to moisture in the air, even during mid-day.

I'll post an example when I find a good one
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Old 07-31-2009   #4
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Default Re: Dealing with haze

Quote:
Originally Posted by aam1234 View Post
Cheers, Steve.

Was referring to moisture in the air, even during mid-day.

I'll post an example when I find a good one
I'd try a haze filter or a skylighter. I understand UVs have no effect for digital
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Old 07-31-2009   #5
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Default Re: Dealing with haze

That's interesting. Always thought the sole purpose of a UV filter is to cut haze. Guess not.

Thanks for the info, mate.
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Old 07-31-2009   #6
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Default Re: Dealing with haze

UV filters cut haze for film, digitals have built in filters so a UV filter is not needed and is usless.
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Old 07-31-2009   #7
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Default Re: Dealing with haze

Hi Michael.

Then how do people deal with haze in digital photography.
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Old 07-31-2009   #8
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Default Re: Dealing with haze

Here is a (boring) example.

The mountains look clear and vivid in early morning, but around 11AM they start to look as below.

Note: A CPL was used in this photo.

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Old 07-31-2009   #9
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Default Re: Dealing with haze

In the old days, at least in black in white we used a yellow filter for cutting through the haze. I've also used it on a colour image after the fact (on the computer) here:
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Old 07-31-2009   #10
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Default Re: Dealing with haze

Very interesting, Mike.

Just few minutes ago I corrected the WB on a photo similar to the one I posted above and the haze disappeared, or at least was reduced significantly.

I'm starting to suspect the CPL and how it might make the haze more apparent.


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