What Is An f/stop?

To give a mental image, imagine that you have to fill a cup of water. There are two ways in which you can fill it at the sink: 1) open up the faucet so that a lot of water fills it up quickly or 2) let the water drip for a long time and fill up the glass that way. A camera works in a very similar way: that camera either lets in a lot of light or adjusts the time light is allowed to hit the film plane.

How the camera measures the time of an exposure is easy. A shutter opens up for a moment and closes. This is called shutter speed. Shutter speeds can vary from the very fast (e.g. 1/8000 second) to very long (e.g. 1 minute).

What is more difficult to understand is how the camera determines the amount of light into the camera. This is determined by f/stop.

In a lens there is a device called a diaphragm (normally a series of adjustable leafs that make a smaller or larger opening in the lens). When more light is needed, the diaphragm is opened. When less light is needed the diaphragm is closed. f/stops measure the size of the opening, which photographers call the aperture.

So why are they called f/stops and how do they work?

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How To Approach Sales As A Photographer

The first step in changing mindsets in sales is to first become a strategic thinker. What I mean by “strategic” is that you should be thinking about the long-term effects of your plans. It is much easier to get to someplace on a map if you know where it is on the map you want to be. Many photographers believe that success is measured only by income; however, income is the result of success, not the final destination. Continue reading How To Approach Sales As A Photographer

The Character of a Lens

There are several factors that must be included when you are considering the characteristics of lenses. To perform well as a photographer, you must recognize the effect of these lens characteristics. Realize also that it is the recognition and use of these various lens features and/or qualities that can make the difference between a good and a poor photograph. By understanding the advantages and disadvantages beyond just the field of view of a lens opens an entirely new level of photography that is an essential, but often overlooked. Continue reading The Character of a Lens