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" <[email protected]>
To: "PDML" <[email protected]>
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
--
PDML Pentax-Discuss Mail List
[email protected]
http://pdml.net/mailman/listinfo/pdml_pdml.net
to UNSUBSCRIBE from the PDML, please visit the link directly above and follow
the directions.
