Thursday, August 7, 2014

F-stops in a macro bug's life!

F-stops in a Macro Bug's Life.

While at Battle Creek Park in St. Paul, Robin began to teach me the third part of the light triangle changing my F-stop (which stands for Focal Length or aperture.)   F-stops show a ratio of the relationship of focal length to lens opening to be technical, but for those of us who are technically challenged the f-stop is how much light the camera will let into the lens.  So the higher the F-stop number the less light so there is need adjust your shutter speed and ISO for optimum light.  Here are some examples of different changes in light by changing the the f-stop and shutter speed. 

F5.6 shutter speed 100 ISO 200
F7.1  shutter speed 250 ISO 200

F5.6 shutter speed 400 ISO 200

This is the hardest part of the light triangle, and I'm still figuring it out.  If you are too this is the park to work with f-stops and light.  It is large and has so many different parts to the park and each part the sunlight is way different. There is a forest, a creek, a prairie, a pond, walking trails, off road trails, and playgrounds.   The best part of this is the bugs pose for the pictures.  They are pretty well trained for photographers.  So have fun and explore the wonders of nature.

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