We been talking a lot of exposure and how learning to work with the individual exposure settings–shutter speed, aperture size and ISO–can give you lots of creative control over the look of your photos.
In particular, our last two posts focused on how the aperture setting allows you to change the depth of field in an image.
And, really, understanding aperture and how it affects depth of field is one of the most important concepts to learn in photography because it has such a big impact on your images. But it also seems to be one that often trips people up. For whatever reason, folks always seem to have a difficult time getting the idea of aperture under their belt.
So, just in case you’re still struggling with aperture, here are two videos that I hope will help. The first talks about the basics of depth of field and how it affects the look of an image. The second goes into the relationship between the aperture size and settings.
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We've seen how managing the ISO setting allows you to control the amount of grain that shows in your photos. But it does more than that. Understanding and working with the ISO setting gives us added flexibility in terms of setting the other two exposure settings–aperture and shutter speed.
The bottom line is that ISO is an important and useful tool, and one that you will want to be comfortable with if you are looking to take creative control of your exposure.