Exposure Guide: Road to Photography [Infographic]

July 10, 2013 |  by  |  Recreation, Tech

As an amateur photographer, I found this infographic to be immensely enlightening as to how cameras work and the terminology that goes along with camera mechanics.

It seems that exposure is usually the first lesson learned when it comes to understanding photography. The shutter speed or exposure time is the amount of time that the camera’s shutter is open–letting light reach the film or image sensor on your camera. As the graph shows, the longer the shutter speed, the more likely you are to get motion blur in your photo.

The aperture of the lens affects the image as well. The larger the opening, the more light will be exposed. So, if you want a more ‘in focus’ picture in daylight, reduce the aperture size so that the image will become darkened as less light enters.

Finally, there is film speed. This is the measure of a photographic film’s sensitivity to light, determined by sensitometry and measured on various numerical scales. The ISO system is used to measure the sensitivity of digital imaging systems. Insensitive film requires more light exposure to produce a similar image density that you would get from more sensitive film. This is referred to as ‘slow film’. The other end of the spectrum, ‘fast films’ are highly sensitive. This reduction of exposure in higher sensitivities, in both digital and film photography, generally leads to reduced image quality. Thus, the higher sensitivity creates a ‘grainier’ image.


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  • usama

    Hi thanks for the share. Kindly link it directly to my blog http://www.Photoaffiliates.com. I’ll be grateful

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  • confused

    this infographic could be a lot clearer. I”m not saying that i can do a better job, but as someone who was really hoping to walk away better educated than i was when i came to this page, i leave disappointed. What is a focus plan in the middle section and why are the cars in different places? What is the white sash supposed to represent in the different sections? the cone angle?


    If you consider yourself “an amateur photographer”, and are unaware of these common terms, I’d more consider yourself a guy with a camera, as opposed to anything else.

  • http://matthewtrader.com/ Matthew T Rader

    As a photographer to who clearly understands all of these concepts, I find this infographic very lacking. The depth of field explanation is not accurate, the plane goes from front to back, not left to right. The definitions are extremely technical. Also, the thing this infographic also does completely wrong, is that it doesn’t show the relationship between the shutter speed, aperture and the ISO. They all have a very dynamic relationship, that must be understood in order to understand each aspect better.