Exposure and Rendering of Photography

With summer just around the corner, soon your family vacation time will be here. During your trip, wouldn’t you like your digital photos to look just like the scenes did with your eyes?

The good news is they can! There are several things you can do to improve your vacation photos. Even with today’s auto-everything cameras, you must still control the camera to get perfect photos.

Most problems with photos can be tied back to three things:

poor color;
over or under exposure.

One technical flaw seen quite often is images with either washed-out color or a color cast to them. There are a couple of things you can do to control both. First, if your subject is outdoors, such as a landscape, use a polarizer filter.

It will “punch” up colors, darken the blue sky, remove reflections and lighten haze – all things that will improve your photos.

If you are experiencing a color cast, then you need to match your camera white balance setting to the ambient light color. Many times the Automatic White Balance (AWB) setting on your camera will render colors accurately, but during those times when it doesn’t, know how to change your white balance.



Your camera strives to make the perfect exposure, but it does so thinking everything is middle-tone or 18 % gray – which everything isn’t. When faced with an overly bright scene, such as white snow or a white sand beach on a sunny day, your camera will over compensate and your whites will be a light gray. To correct this, you have to add exposure. You can do this by either slowing down the shutter speed one stop or using the next smaller number f-stop. Both will add the same amount of light.

For extremely dark subjects, such as the black coat of a dog, your black color will be more of a dark gray. In this case, you have to take light out to make the black color look black. To do this, either adjust your shutter speed to one stop faster or change your f-stop to the next larger number. Either will take out the same amount of light, thereby darkening your black color.

A great tool that most DSLR cameras have for checking exposure is a histogram. It is nothing more than your exposure shown as a graph, but many photographers do not understand how to use it.

If either slope is cut off part way up either vertical line, then you have clipping and are losing exposure data. If your clipping is on the left side, then add exposure. If clipping occurs on the right side, remove exposure.


Blurriness is caused by one of two things – improper focusing or using too slow a shutter speed. If the whole scene is blurry, then the culprit was camera shake meaning you tried to handhold the camera using too slow of a shutter speed. Correct this next time by either mounting your camera on a tripod or shooting at a faster shutter speed.

If your subject is blurry, but there are parts of the scene in focus, then your point of focus was not on your subject. When using the Rule of Thirds, this can easily happen. You have your subject off to the side, but your camera takes the point of focus from the middle of your scene.

To remedy this, put your subject in the middle of your viewfinder and press your shutter button half-way down. With your shutter button still halfway down, swing the camera putting your subject back in the proper position. Now press the shutter button all the way taking the picture.

Many DSLRs have multiple focus points. In this case, select the focus point on the side where your subject is located. Move the camera until the focus point is on your subject. Now press the shutter button.

With a DSLR (Digital Single Lens Reflex) camera, you can control the composition of your photos.

If you liked this article, please visit my website at Digital Photography by Ron Kness to learn more digital photography tips and techniqes