A Photo a Week Challenge: Depth of Field

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Depth of field in photography (and light in general) is how narrow a strip of what you are looking at is in focus. In photography, the depth of field is controlled by two things: your f-stop (aperture) and the length of your lens (mm). To narrow your depth of field using aperture, use a smaller f-stop number. This will open your shutter wider and let more light in. I know this seems counter-intuitive, but that’s how the light refracts. Also, longer lenses (50 mm and higher are so much fun for portrait work) will give you a narrower depth of field. So if you want to shoot something up-close and personal with great bokeh (blurring) in the background, use a smaller f-stop and a longer lens. If you want to capture a grand landscape, use a shorter lens with a higher f-stop. Simple, right? Right.

IN A NEW POST CREATED FOR THIS CHALLENGE, SHARE A PHOTO OR TWO (OR THREE…) PAYING ATTENTION TO YOUR DEPTH OF FIELD.

Everyone is welcome to participate, even if your blog isn’t about photography. Here’s how it works:

  1. Each week, I’ll come up with a theme and post a photo that I think fits. You take photographs based on your interpretation of the theme, and post them on your blog (a new post!) anytime before the following Thursday, when the next photo theme will be announced.
  2. To make it easy for others to check out your photos, title your blog post “A Photo a Week Challenge: (theme of the week)” and be sure to use the “postaday″ and “Photo a Week” tags.
  3. Come back here and post a link to your image in the comments for this challenge.
  4. Follow nancy merrill photography so that you don’t miss out on weekly challenge announcements.
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Sylvain Landry’s Challenge: Depth of Field

This is the first of Sylvain’s challenges that I’ve been able to join. I’m very excited for this one. I’ve included many photos I’ve posted before along with a new one. I hope you like them.

For more from this challenge, visit Sylvain Landry’s Challenge: Depth of Field.

Sunday Stills: Shallow Depth of Field

I love using lenses with long focal lengths (50 mm+) for portrait work. The higher (longer) the number, the more shallow your dept of field (DOF), which I know seems counter-intutive, but that’s the way the light refracts.  For these shots, I used my 105 mm.  Shallow DOF lets you draw attention to the part of the image you really want to emphasize.

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Family Home Evenings are fun

For more from this challenge, visit Sunday Stills: Shallow Depth of Field.