4 pts. Due September 28th, 2:30 pm.

Photographing outside during the day in good light, take a minimum of 30 photos where there is something in the foreground and something in the background. Use shallow depth of field so either one or the other is out of focus.

If you are working with a camera phone, all of your shots will be close ups. Please for this homework, do not use an app like focos or portrait mode.

When working with a camera phone the best way to achieve shallow depth of field is to get very close to the subject with some actual space between the foreground and the background.

Put your 30 photos on an album in Flickr. Send your single best photo to the group.

Camera Phones and Depth of Field

Camera phones have a fixed aperture. For example, the aperture of the iPhone 7 is f1.8. This is one of the things that makes cameraphones so good in low light. You might think this wide open aperture would make it easy to get shallow depth of field with a cameraphone. However, the other factors involved make it quite challenging to achieve shallow depth of field with a cameraphone.

Camera to subject distance is the factor that gives you the most control of depth of field when working with a camera phone. To create shallow depth of field bring the camera as close as possible to the subject. Allow for some actual space behind the subject

Focal length is the distance between where the light converges in the lens and the sensor and there just isn’t that much space. Even for cameraphones, we use the size of 35 mm film as the standard when discussing focal length. So the iPhone 11 has three lenses that are the 35 mm equivalent of 13mm, 26mm and 52mm. Earlier phones with one camera have one focal length. If working with a camera phone with more than one lenses, use the telephoto choice (highest number) to create shallow depth of field.