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Exposure compensation

This tag is associated with 4 posts

Exposure Compensation (black) – Learn by Doing Photography

Learn by Doing Photography – Practice your photography skills with weekly photography assignments. I will post a new assignment every Friday, you can post your pictures at the bottom of this post or on the DigitalCamFan Facebook. If you have any questions please refer to the guidelines, if you have no questions jump right in any time!

Learn by Doing Photography Assignment #4 Using exposure compensation for a darker image on a black background

What happens when you’re trying to photograph a black cat in a dark alley, or at a concert where the background is very dark. If you take a picture you’re going to end up with a gray cat in a gray alley and a gray background at your concert. Why? Because your camera is always and will always try to find the middle gray. That is what it sees and that is what it’s always trying to expose for.

To take a drastic image as an example – a solid black wall will photograph gray. A solid white wall will photograph gray. our camera is always trying to find 18% gray. So when there is too much light or white your camera will underexpose to find the “perfect exposure” 18% gray. Likewise if your image is too dark your camera will overexpose to find the “perfect exposure” 18% gray. Only you can decide what the perfect exposure is, not your camera.

That is where exposure compensation comes in. This week find a dark background and a darker subject. Take a few different photographs using your exposure compensation and see how the black changes from image to image.

For the four shots below I set the first one in aperture priority f/5.0 +1 on the exposure compensation. The only thing I changed for all four images was the exposure compensation.

1.3 sec at f/5.0 –> + 1 exposure compensation
Exposure (1 of 4)

0.8 sec at f/5.0 –> 0 exposure compensation
Exposure (2 of 4)

0.4 sec at f/5.0 –> -1 exposure compensation
Exposure (3 of 4)

1/4 sec at f/5.0 –> -2 exposure compensation
Exposure (4 of 4)

 

LBD Photography – Using exposure compensation, an image of black

Learn by Doing Photography – Practice your photography skills with weekly photography assignments. I will post a new assignment every Friday, you can post your pictures at the bottom of this post or on the DigitalCamFan Facebook. If you have any questions please refer to the guidelines, if you have no questions jump right in any time!

Learn by Doing Photography Assignment #7 Find an image that is mostly black – Set your camera on aperture priority, expose the first picture when your camera thinks you have a perfectly exposed image. The next few photos decrease your exposure compensation to -1 and -2 and see what happens.

Settings: ISO 200 1/30 sec at f/2.8 Exposure Compensation = -3
At the bottom of the post I have all seven examples of this picture -3, -2, -1, 0, +1,+2, +3

IMG_5903-1

This week we’re focusing on a dark scene, last week was white on a white background.  The one constant is our camera sees the world as a mid-toned gray. It will take the light and dark in a scene and average it out to a nice mid-tone color. If there is too much light the camera will reduce the exposure to make sure you end up with a nice mid-tone gray. This week we’re working with dark colors so the opposite is true. The camera says wow there is too many dark tones, the logical answer for your camera is to increase the exposure to make sure your exposure with be a nice mid-tone gray. Your camera loves 18% gray and wants to make sure all your exposures turn out that mid-tone gray color.

In most cases this works out just fine, but what about that black cat against a black wall. You don’t want a gray cat against a gray wall so we need to decrease the exposure using exposure compensation and our black cat will be the dark shade of black we want it to be. All camera’s are a little different so be sure to take a look at your manual to see exactly how you adjust your exposure compensation.

Here is an excellent video by Mark Wallace explaining Exposure Compensation. He does an excellent job helping you understand exactly why you need it and how it works!

Below are 7 examples of how the color black changes as you adjust your exposure compensation. I had the camera on a tripod and only adjusted the exposure compensation for these photos, no editing was done.

Settings: ISO 200 1/30 sec at f/2.8 Exposure Compensation = -3
IMG_5903-1

Settings: ISO 200 1/15 sec at f/2.8 Exposure Compensation = -2
IMG_5904-2

Settings: ISO 200 1/8 sec at f/2.8 Exposure Compensation = -1
IMG_5905-3

Settings: ISO 200 1/4 sec at f/2.8 Exposure Compensation = 0
IMG_5906-4

Settings: ISO 200 1/0.5 sec at f/2.8 Exposure Compensation = +1
IMG_5907-5

Settings: ISO 200 1/1.0 sec at f/2.8 Exposure Compensation = +2
IMG_5908-6

Settings: ISO 200 1/2.0 sec at f/2.8 Exposure Compensation = +3
IMG_5909-7

Remeber you can post your pictures at the bottom of this post or on the DigitalCamFan Facebook. If you have any questions please refer to the guidelines, if you have no questions jump right in any time!



Next Week Learn by Doing Assignment #8 – A walk around the block!

LBD Photography – Using exposure compensation, an image of white

Learn by Doing Photography – Practice your photography skills with weekly photography assignments. I will post a new assignment every Friday, you can post your pictures at the bottom of this post or on the DigitalCamFan Facebook. If you have any questions please refer to the guidelines, if you have no questions jump right in any time!

Photography Assignment #6 Find an image that is mostly white – snow, white rabbit on the snow, white bed comforter. Set your camera on aperture priority, expose the first picture when the camera says it’s perfectly exposed. For the next few pictures adjust your exposure compensation, as your increase your exposure you will see your gray turn to white.

Settings: ISO 100 1/500 sec at f/5.6 Exposure Compensation = +2
At the bottom of the post I have all five examples of this picture -2, -1, 0, 1, 2

IMG_5794-5

Our camera sees the world as a mid-toned gray. It looks at all the light and dark in the scene and averages it out so it’s not too dark or too light but a nice average mid-tone color. This week we’re focusing on if there is too much light in the scene. For example, white snow, someone wearing a white dress next to a white car. Any scene you can think of where there is more light in the scene than dark.

When there is too much light in the scene the camera will reduce the exposure to make sure your end result is average. In general most scenes we shoot are a mix of light and dark so with an average picture your exposure is usually going to be right. It’s when there is too much dark like shooting a black cat against a black wall, or in my case too much light with all the white snow that our camera says wait a minute, too much and tries to compensate by adjusting the exposure  closer to mid-toned gray. This is when we want to use our exposure compensation…. All camera’s are differed so take a look in your manual to see exactly how to adjust your exposure compensation.

Here is  tutorial on explaining exposure compensation a bit more in depth from LyndaPodCast.

Here are my examples using -2, -1, 0, 1, 2 on the same exact picture.

Settings: ISO 100/ 1/500 sec at f/5.6 Exposure Compensation = +2

Exposure Compensation +2

Settings: ISO 100  1/1000 sec at f/5.6 Exposure Compensation = +1

Exposure Compensation +1

Settings: ISO 100 1/2000 sec at f/5.6 Exposure Compensation = 0 (Camera was happiest with this exposure)

Exposure Compensation 0

Settings: ISO 100 1/4000 sec at f/5.6 Exposure Compensation = -1

Exposure Compensation -2

Settings: ISO 100 1/8000 sec at f/5.6 Exposure Compensation = -2

Exposure Compensation -2

Remeber you can post your pictures at the bottom of this post or on the DigitalCamFan Facebook. If you have any questions please refer to the guidelines, if you have no questions jump right in any time!

Next Week Learn by Doing Assignment #7 – Exposing for a dark image



Understanding Exposure Compensation

On this weeks “Learn by Doing” we wanted to try out the idea presented in Bryan Peterson’s book “Understanding Exposure“. The question what happens when your image is mostly green. His idea meter your image at -2/3 stop!

Metering still confuses me! Even though exposure seems like photography 101 I think I will be trying to understand it for my entire photography career! I still have to think about it every time I come to a tricky situation when my scene is mostly white black or high contrast.  I have to think add light to light or add dark to dark. Now I have a new trick in my pocket to think about when my image is mostly green.

This tutorial is a great tutorial that talks about just that… exposure compensation.  At about 6 minutes into the video he shows us how sensitive our meter is. He first takes a picture of Erica with mostly white, but her black hair is down. The next picture is her hair pulled back with just that change he had to adjust his exposure!

Now here is the good stuff that pertains to this weeks assignment! At about 8 minutes he does an awesome tutorial on how to adjust your exposure compensation! He explains how to change exposure compensation in aperture priority and shutter priority as well as what to do if you’re in manual mode!

Take a moment to check out some of their other videos… great job!

Learn by Doing this week was from the book