In photography, depth of field refers to the range of distance where a picture will still be focused and sharp. Using depth of field in pictures is great in keeping the subject as the main focus, and drawing the viewer’s attention to the main subject in a photo.
Small/shallow DOF: Good for blurry background/foreground.(portraits)
Large/deep DOF: Good when you want more scene in focus (Landscapes






At the start, my subject is more clear and in focus, but as i change the aperture, my subject gets more blurry and unfocused. The slow shutter speed makes it blurry, while the fast shutter speed makes it more focused/clear.






In these pictures, we started close together and slowly backed up. You can see that, even with an average f-stop, the picture comes out blurry. The depth of field is limited because of the apertures i used. I moved back about 2-3 feet between the pictures.




These last 4 pictures show the difference between using a small DOF, and using a deep DOF. The first 2 are interesting in some ways, but the last 2 are more technically good. Of course, a deep DOF can look really good if done properly (and maybe if a tripod/ other steady surface are used).
The last image (of Lilah) i picked as my featured image because i liked how clear and not blurry it is. I used a regular f-stop and it created a good picture. While the ones taken in the library taught me things, they weren’t actually good pictures.