ThierryD From Luxembourg, joined Dec 2005, 2127 posts, RR: 50
Reply 2, posted (9 years 5 months 4 weeks 1 day 21 hours ago) and read 3508 times:
AIRLINERS.NET CREW HEAD SUPPORT
A filter won't help you in this case Lukas.
I know this spot in VIE pretty well out of my own experience since I stood there for about 3 hours one day and shot some 70 shots of which more than 50 were worthless for uploading due to the heat haze you get which radiates from the ground.
Though a filter might help you reduce the overbrightness on the airplane fuselage it will not be able to get rid of the heat haze and thus will not help you get A.net acceptable shots.
Best thing to do in VIE -where you rarely get near to the planes- during summer is either to only photogrpah planes while they're already/still in the air where you won't get any heat haze and/or photograph in the early morning and in the evening where heat haze also is not a problem anymore.
Psych From United Kingdom, joined Nov 2004, 3073 posts, RR: 57
Reply 8, posted (9 years 5 months 4 weeks 1 day 13 hours ago) and read 3422 times:
Guys - it is worth mentioning that although heat haze is at its worst in warm summer months, it can still be a problem at other times.
I rediscovered decades-old physics lessons recently, as I found on a chilly day at Manchester last week that horrible heat haze could still wreck my photos. The ambient air temperature doesn't have to be hot - I was in a woolly hat that day. My rudimentary understanding is that it is all about the relative densities of the air and the mixing that occurs as the warmer air rises. Enough warmth from the sun to generate a lot of radiated heat (by something good at that like black tarmac) going in to cold air will cause heat haze. What is good about the winter (or either end of the day) is that there is less solar energy to be radiated back upwards.
The differing densities of air mixing alters the physics of the light passing through, hence the 'wobbly' effect. No amount of technology on the end of your camera can affect that physics.
LukasMako From Austria, joined Feb 2006, 88 posts, RR: 1
Reply 9, posted (9 years 5 months 4 weeks 1 day 12 hours ago) and read 3401 times:
Quote: Purple Fringing Artifact
To my knowledge, the only practical optical role for UV filters in digital photography relates not to scatter, but to an artifact known as "purple fringing" (PF). PF is most commonly seen in digital images but also occurs in film images. It typically appears as a multipixel band of bright purple surrounding the peripheral edges of dark objects cast against a bright background. Central edges are spared. Backlit leaves set against a bright sky are a common PF scenario. A widely accepted theory of purple fringing has yet to emerge, but it's most likely a high-order lens aberration akin to but different from run of the mill chromatic aberration, which instead produces soft red and green fringes on opposite sides of affected objects.
Actually I am also realizing this problem. When opening the aperture higher than 6.3 it always happens. Sometimes even with 7.1.
Any Help you can give me with that problem