Thursday, February 09, 2012
   
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What is aperture and what it does to exposure?

What is aperture?

The aperture is a mechanism that controls how much light hits the film or a sensor of a camera. The aperture is just like an iris of the eye, which controls light levels inside the eye. It's composed of interlocking metal plates. As you close the iris down to a smaller aperture, it stops more light from passing through to the image sensor. Therefore, as you are varying the aperture, you vary the size of the opening.

 

How to make a panoramic photo?

If you are interested in how to make panoramic photos, you have come to the right place.

A panorama is perfect for getting an entire landscape in one picture. By capturing a series of images around a single point of rotation, and stitching them together, you can make beautiful panoramic pictures.
panorama
In this article, I will explain how to make panoramic photos using just your digital camera, a tripod, and free image editing software to stitch the images together.

 

Understanding depth of field

What is depth of field and why is it so important?


understanding depth of fieldTechnically speaking, depth of field is the portion of a scene that appears sharp in the image. Never mind what kind of photo you want to take you want to have total control over depth of field.

To understand the depth of field better we need to divide an image into 3 parts.

These parts or elements of the image are subject, foreground, and background. Subject is what the main point of interest that you want to capture is. Foreground is everything in front of the subject and background is everything behind the subject.
 

What is an image histogram and how to use it in photography?

image histogramHistogram is a very valuable tool for any photographer who wants to have better control over exposure and image quality. It's a graphical chart that shows the brightness levels of an image. The left side of the chart represents the darkest tones, the right side represents the lightest tones, and the middle part represents the tones in between.

 

What is EXIF and how you can use it to your advantage?

EXIF is a format for storing metadata in image files. When you take a picture, metadata is embedded within the image file itself. Metadata includes information that can be very valuable to the photographer. It usually includes date and time, aperture, shutter speed, focal length and ISO speed. It can also include information you add in a photo-editing program.

 

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