levels corrected

Image correction basics: Understanding Histograms and Photoshop Levels

Understanding to read an image histogram is a crucial skill in digital photography. It will not only help you capture better exposed images, but also correct badly exposed ones in Photoshop, Lightroom and other similar software. If you feel its complicated don’t just dive in and soon you will have a deeper understanding of what histograms are all about and how you can use them.

Before you start watching the videos let’s first get a clear idea of what histograms represent. Wikipedia has a very clear definition for that:

“An image histogram is a type of histogram that acts as a graphical representation of the tonal distribution in a digital image. It plots the number of pixels for each tonal value. By looking at the histogram for a specific image a viewer will be able to judge the entire tonal distribution at a glance.
Image histograms are present on many modern digital cameras. Photographers can use them as an aid to show the distribution of tones captured, and whether image detail has been lost to blown-out highlights or blacked-out shadows.

The horizontal axis of the graph represents the tonal variations, while the vertical axis represents the number of pixels in that particular tone.[1] The left side of the horizontal axis represents the black and dark areas, the middle represents medium grey and the right hand side represents light and pure white areas. The vertical axis represents the size of the area that is captured in each one of these zones. Thus, the histogram for a very dark image will have the majority of its data points on the left side and center of the graph. Conversely, the histogram for a very bright image with few dark areas and/or shadows will have most of its data points on the right side and center of the graph.”


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Exposure – Let’s Get it Right!

Photography is fun, but getting the correct exposure sometimes can be challenging. Without correct exposure, the photos may be either too dark or too bright, and may fail to present the desirable depth of field to viewers. Setting the correct exposure for your camera should not be a daunting task. There are several useful tips mentioned in our video clip that will assist you in finding the desirable exposure settings on filmmaking or still photography.