Tuesday, March 23, 2010

Bloggography Challenge: Exposure Compensation

This week's lesson was all about adding or subtracting light in your picture.  You can read all about it here.  Basically, it adds/subtracts light to adjust the automatic setting your camera picks when it reads the light, because it sets the setting according to the light it reads-which is not always the light for the actual picture you want.

I experimented with this a lot this week.  The weather was B.E.A.U.T.I.F.U.L!  We had been in the winter doldrums for what seemed like years-so this week's above normal temps and Sun (!!) seemed magical.  I took pictures of the sky, the first Spring flowers and my dog.  We got Dairy Queen, Italian Ice and went to the park.  I have dozens of pictures on my computer of the same image-all with different Exposre Compensation Values.  Here is the best of them (along with an incorrect exposure to compare it to) Oh, I shot everything in the "A" Aperture mode:

ISO: 800 Shutter: 1/640 Aperture: f 5.0 Exposure Bias: +.67
Correct Exposure makes this one look Sun-Kissed even though it is under a tree.

ISO: 800 Shutter: 1/80 Aperture: f 22 Exposure Bias: -.67 
Too dark

Here is another example.  From these I realized that adjusting the Exposure Compensation I could lighten and deepen colors:

ISO: 400 Shutter: 1/4000 Aperature: f5.6 Exposure Bias: -1.0
This picture of the sky is too dark.  It looks like Storm Clouds

ISO: 400 Shutter: 1/800 Aperature: f5.6 Exposure Bias: +1.33
This picture of the sky is too light.  The color washes out.

ISO: 800 Shutter: 1/1600 Aperature: 5.6 Exposure Bias: +.33
This picture is just right. 

Finally, took these pictures today.  These two pictures illustrate how just a small change in Exposure Compensation can make a difference.

ISO: 800 Shutter: 1/640 Aperature: 5.0 Exposure Bias: +.67
This picture is good...

But this picture is just a little better.  More color.  More definition.  Only one step up in Compensation
ISO: 400 Shutter: 1/320 Aperature: f5.6 Exposure Bias: +1.0


  1. Your examples are so good! I especially love what the exposure compensation did for the clouds!!

  2. I am so jealous of everyone's bulb flowers! Beautiful examples!

  3. Those are really cool! Nice job and great explanations too!

  4. such sweet little flowers...especially the little purple one. The third cloud photo is amazing.