Sponsor Message:
Aviation Photography Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
Does Temperature Affect Photo Sharpness?  
User currently offlinemichaelvandijk From Netherlands, joined Jul 2013, 16 posts, RR: 0
Posted (1 year 1 week 2 days 20 hours ago) and read 2749 times:

So, in the summer pictures are suffering from heat haze.

Do pictures with a subject distance That is around 20-50 meters also suffer from heat haze?

When in the summer there is heat haze, will your pictures be sharper in winter because of lower temperatures? I just started photographing couple of months ago and i only took pictures in the summer.

Thanks for the Info's

3 replies: All unread, jump to last
 
User currently onlinevikkyvik From United States of America, joined Jul 2003, 9953 posts, RR: 26
Reply 1, posted (1 year 1 week 2 days 20 hours ago) and read 2733 times:
Support Airliners.net - become a First Class Member!

Quoting michaelvandijk (Thread starter):
So, in the summer pictures are suffering from heat haze.

Heat haze can occur during all times of year. It's not dependent on absolute temperature, but rather on temperature gradients in the air. Basically, as it's usually created, the sun warms the ground, which then heats up the air immediately above it. That air is then hotter than the air above it, so you get convection, and hence heat haze as the differing air temperatures mix.

It tends to be worse in the summer, yes, but I've seen it pretty bad in the winter too (then again, winter in LA isn't exactly cold).

Quoting michaelvandijk (Thread starter):
Do pictures with a subject distance That is around 20-50 meters also suffer from heat haze?

Technically, as long as you have any air between you and your subject, you can get heat haze. But it's more noticeable with greater subject distance, and with higher zoom. I've certainly noticed it at air shows at not too great a subject distance.



"Two and a Half Men" was filmed in front of a live ostrich.
User currently offlineScooter01 From Norway, joined Nov 2006, 1204 posts, RR: 8
Reply 2, posted (1 year 1 week 2 days 17 hours ago) and read 2710 times:
Support Airliners.net - become a First Class Member!

Quoting vikkyvik (Reply 1):
but rather on temperature gradients in the air.

Good example:

View Large View Medium
Click here for bigger photo!

Photo © Jason McDowell



Scooter01   



"We all have a girl and her name is nostalgia" - Hemingway
User currently offlineJakTrax From United Kingdom, joined Jun 2005, 4936 posts, RR: 7
Reply 3, posted (1 year 1 week 2 days 14 hours ago) and read 2664 times:

There are two ways to reduce (but not always eliminate) the effects of heat-haze: getting as close to your subject as you can, and increasing your elevation.

Here in the UK we had an incredibly cold Mar/Apr, with early morning temperatures frequently dipping to -5C. However because the sun was rising quite high in the sky it was warming the ground nicely, giving us massive temperature variations between the air immediately above ground and that a little higher up. It produced some of the worst haze I've ever seen!

A primary reason why haze tends to be far less in winter is because the sun struggles to get high enough above the horizon to create the necessary temperature differences. Its rays can't penetrate enough of the atmosphere to do any real damage.

A good little trick I use for static aircraft is to wait for a large cloud to come over; the cloud casts its shadow and cools the ground, subduing any haze. When the cloud finally gives way I shoot the subject in the first hint of sunshine. Doesn't always work but effective 90% of the time, providing your subject isn't too far away.

Karl


Top Of Page
Forum Index

This topic is archived and can not be replied to any more.

Printer friendly format

Similar topics:More similar topics...
Does Temperature Or Wind Cause Noise? posted Sun Mar 21 2004 05:24:26 by MartinairYYZ
Processing Of A Photo On Sharpness,how You Does? posted Mon Sep 18 2006 15:55:02 by Andrei
Does This Photo Meet The A.net Standards? posted Sat Jan 26 2008 14:19:42 by Sfilipowicz
How Long Does It Take To Screen A Photo? posted Sun Sep 23 2007 23:36:27 by Flyboyseven
Does Subject Matter Affect Approvals? posted Wed Jan 31 2007 16:54:52 by YOWza
Does This Photo Have What It Takes For Anet? posted Fri Jan 12 2007 15:33:08 by AIRBUSRIDER
Does Photo Sales Function $$ On The Site Suck? posted Sun Oct 15 2006 16:23:27 by Eksath
Does This Photo Have A Chance Here On Anet? posted Fri May 26 2006 17:11:00 by AIRBUSRIDER
Does This Photo Have A Chance? posted Wed Apr 12 2006 16:44:33 by AIRBUSRIDER
Does Grand Rapids Really Have A Great Photo Spot? posted Fri Nov 4 2005 06:17:04 by F4wso