Stitch Assist for Seamless Panoramas

In this photography lesson we look at another one of the digital camera features-stitch assist. Stitch assist mode is now available on many advanced digital cameras and is designed for shooting panoramas in sections.

Panorama-Manhatten Bridge - Click for Larger Image

Panorama-Manhatten Bridge - Click for Larger Image


These sections are then stitched together into one single and seamless photograph.
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Digital Camera Basics

Compact Point and Shoot Digital Camera

Digital cameras come in a wide variety of shapes, sizes and sophistication. At the most basic level you have a point and shoot camera with a fixed focus lens, automatic exposure control and color balancing and a simple viewfinder to frame and compose your photo.

Some of these basic digital cameras add a few extras into the mix such as a setting that allows you to shoot closeups or macro type shots. This is often indicated by a small icon like a flower or may just say closeup or macro. All this function does is expand the focus range.

The manual that comes with the camera usually gives you the distance range that will produce acceptably sharp images.

Auto Focus Lenses

The next level up is a focusing lens. This too is controlled automatically, and the lens moves in and out as the focus distance changes. Generally the viewfinder will indicate the area of your image that is used to determine the correct distance for the lens to focus on.

This area will be in the center of the frame and you must insure that your main subject is in this center area in order for the lens to properly focus. For composition purposes, however, you may not want the main subject to appear dead center.

Focus Lock

Fortunately, digital camera manufacturers have allowed for this possibility by building in a feature called focus lock. You can position your main subject in the center of the viewfinder so the lens will focus properly. Then, depress the shutter release button about half way and the focus becomes locked as long as you continue to hold the button half way down.

You can then shift the camera slightly to get the composition you prefer and press the shutter release down the rest of the way to take your picture. You may need to experiment some until you learn just how far to depress the release button to lock in the focus without actually pressing it so far that you end up snapping the picture.

With a little practice this will soon become second nature and you’ll be able to do it quite quickly. It is worth the effort to master this technique if you want to make sure your main subject is sharply focused even though the final composition has this subject off center.

Add a Zoom Lens

As you move up to slightly more advanced cameras you begin to see some additional options that you can use to control your results and let you get more creative in the pictures you take. One of the more popular features is a zoom lens. This feature is like having several lenses all in one.

A zoom lens generally goes from a wide angle view to a telephoto view. Zoom lenses will be more thoroughly covered in another lesson. The main thing to understand is there is an optical zoom and a digital zoom. The important one is the optical zoom and should be the only one you consider when deciding if you want a zoom lens or not.

Scene Modes

Other common features that you begin to find as you move up from the very basic digital cameras are what are referred to as image zone modes, or scene modes. These are automatic settings that are for specific kinds of scenes such as landscape mode, portrait mode, night scene mode, stitch assist mode and even movie mode.

Learning to use these modes is not difficult and from their names you can pretty easily figure out what kinds of scenes they are used for. Once you become familiar with the icons used to identify these modes it is a simple matter to switch from one to another.

Other common features you find on digital cameras are built in electronic flash, self timer, ISO settings, white balance settings, and resolution choices. Don’t worry if you don’t know what some of these are. They will be explained in more detail in other lessons.

Start by getting familiar with the features your camera has and take lots of pictures. The great thing about a digital camera is being able to shoot all the photos you want without wasting money on film and developing. So begin experimenting and learn some of the more advanced controls as you go.

Here’s to better photography…

Al Hannigan

Al Hannigan

Digital Camera Features

In addition to the full auto mode, many digital cameras have Image Zone Modes that are auto settings that give you more creative control over your photography.

There are times when you may want to choose a specific f-stop, use a faster or slower shutter speed or just have a little more control over the image than you would get when using the point and shoot, auto mode.

Perhaps you want to limit the depth of field so your subject stands out from a busy background, or you want to freeze some action and need the fastest shutter speed… all of these choices are possible when your camera has the image zone modes described below.

Learning what these features are, how they work and how they can apply to different kinds of photography will help you decide which of these options you may want to include when buying a digital camera.

Or if you already have these features on your camera, but were uncertain what they were for or how to use them, then the lessons below will explain them.

Take your photography to new levels of creativity and control by learning about these common features…


Lesson Category: Digital Camera Features

Using Aperture Priority Mode

Using Shutter Priority Mode

Using Portrait Mode

Using Landscape Mode

Stitch Assist Mode

Using Night Scene Mode

Digital Camera Auto Mode

Using the auto mode on a digital camera gives you a point and shoot camera that allows you to concentrate on the subject while the camera makes the necessary settings to give you a well exposed and properly focused image.

But like most automatic features, knowing how they function will help you keep the camera from getting fooled in those special situations that often yield the most dramatic photos…. such as back lighting, or when your main subject is off-center.

In this section we look at the four main components of the automatic mode … focus, exposure, white balance and flash.


Lesson Category: Digital Camera Auto Modes

How Auto Focus Works

How Auto Exposure Works

How Auto White Balance Works

How Auto Flash Works

Understanding Auto Exposure

Auto exposure controls the amount of light that is used to expose the camera’s image sensor. It does this by adjusting the aperture and the shutter speed.

Proper exposure is basically determined by averaging the amount of light needed to produce an image with good highlights, middle tones, and shadows.

The camera has a built in light meter that evaluates the total amount of light reflected from the subject. It then averages this light and sets the correct exposure.

Digital cameras can have more than one type of metering system however. So it is important to learn how your particular camera meter measures light as well as any options to change the way it does this.

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How White Balance Works

All digital cameras have an auto white balance setting that allows the camera to detect the color of the light and balance it correctly.

When you look at a white object, say the page of a book or a sheet of white paper, it appears white to you regardless of the light source. When lit by an ordinary household bulb, or a florescent light, or outside in daylight it still looks white to your eye.

But to the camera’s eye, each of these light sources is different and each produces a tint of color on the white object. And unless the camera makes some sort of adjustment for this variation in light color, a white object will not appear white in your photos.
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