The Clarity slider in Lightroom works miracles (almost). The new
dehaze slider might do even better here.

Lacking those, a combination of midtone contrast and unsharp filtering
with larger radius and smaller strength values can also achieve
clarity. Watch out for halos, of course.


On Wed, Aug 31, 2016 at 1:12 PM, Igor PDML-StR <pdml...@komkon.org> wrote:
>
>
> Jack,
>
> Your suggestion raises a few good questions: is a haze filter effective
> through an airplane window?
> (You probably know that polarizers shouldn't be used through the airplane
> windows.)
>
> I've seen people advising using it even on the plane,
> but I still had doubts: A haze filter limits UV, but I would assume the
> airplane window should filter those out already.
>
> I just googled this question, and it turns out that windows on planes do not
> block "UVA" which is the long-wave UV (315 - 400 nm).
> It turns out that even car's side and rear windows don't block UVA (only the
> windshield does that is specially treated for that.)
>
> The spectral properties of the haze (and "UV") filters, see e.g. the 3rd
> plot at
> https://ww2.chemistry.gatech.edu/~nmakarov3/INTERESTS/Photo_Filters/index.htm
> , indeed confirm that haze filters are effective in that range of
> wavelengths.
>
>
>
> Now, yet another question: how effectiveness of a haze filter compares to
> post-processing?
>
> I assume it is, but I'd be curious to hear if someone has a more solid
> evidence or experience.
>
> Igor
>
>
>
>
>
>  Jack Davis Wed, 31 Aug 2016 09:10:00 -0700 wrote:
>
>> Haze filter? I realize, at this point, that I haven't even thought of a
>> haze filter since the days 15 to 20 years ago when I was traveling the
>> higher
>> elevations in Colorado, Wyoming, California, etc..
>> Here I do see the obvious hazy, along with a dull, pinkish/purple.(??)
>>
>>
>> J
>>
>> ----- Original Message -----
>> From: "Igor PDML-StR" <pdml...@komkon.org>
>> To: "PDML" <PDML@pdml.net>
>> Sent: Wednesday, August 31, 2016 8:49:23 AM
>> Subject: 2 PESOs: Looking from above
>>
>> I like taking photographs from airplanes. It is usually not that simple,
>> as the contrast is decreased drastically. And not everything is
>> "photogenic". :-) So, the yield is usually very low.
>>
>> Here are a couple of very different pictures taken during my recent trip
>> to Europe:
>> 1. Very pastoral view from Czechia (vicinity of Prague):
>> http://42graphy.org/misc/Czechia_IR35068.jpg
>>
>> 2. Very industrial view of Frankfurt:
>> http://42graphy.org/misc/FRA_IR35077.jpg
>> This had extremely low contrast, I think I was able to push all I can
>> (with a combination of contrast boosting,  "clarity" in LR [unsharpen filter
>> AFAIK], and sharpening).
>> However, the history shows that I am wrong and PDMLers were able to
>> suggest some further improvements. So, I'd appreciate those suggestions.
>>
>> All comments and suggestions are welcome!
>>
>> Igor
>>
>>
>
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