Canon powershot G7 - An insert about experimenting with the depth of field: It seems like beginning photographers often struggle with the idea of aperture and how it affects their photographs more than any other concept. Here’s a great way to really nail the idea down. Choose an object you’d like to photograph. Set it outside on a bright day - we’re going to need a fair amount of light for this experiment - and start by shooting it on the widest aperture possible (smallest f/number) from as close or as zoomed in as possible. Then, take another photograph at every couple aperture settings until you get to the smallest aperture possible (highest f/number). Notice how the depth-of-field becomes wider with the smaller apertures.
But don’t stop there - zoom out (or back up about four or five feet) and repeat the same exercise again. You’ll notice that the depth of field from further away is much greater than it is from close range. This is because the depth of field is regulated both by the distance to the subject and by aperture.
In addition to macro photography to this is a great exercise to help you with portrait photography too. Beginning photographers often wonder how to get that creamy smooth background in their portraits behind the subject. It’s a function of depth of field. If you limit the depth of field, either through using a smaller aperture or by getting closer to the subject, the background will be less in focus.










