Timeline for What does small depth of field mean?
Current License: CC BY-SA 2.5
8 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 15, 2011 at 0:17 | comment | added | Nick Bedford | Well yes, there is no depth of field in a two dimensional image, but I see your point. | |
| Jun 14, 2011 at 23:52 | comment | added | Itai | @Nick - Getting closer but the truth is there is no depth-of-field in an image. Only ONE distance is in focus, everything in front and in back is out of focus but gradually so. How fast you notice things become out of focus depends on the viewing size. That is the depth-of-field. | |
| Jun 14, 2011 at 22:20 | comment | added | Nick Bedford | I see what you mean. I just tested this with one of my photos. The photo and the depth of field itself is the same, as that cannot physically change once captured, but a larger viewing size makes it easier to perceive the depth of field in the photo. I found myself more aware of the bokeh when holding it close. | |
| Jun 14, 2011 at 22:13 | comment | added | Itai | @Nick - DOF is a perceptual phenomenon and, as a correlary of points one and two above, has to do with your ability to perceive the difference in focus around the plane of focus. On a smaller photo, your ability to see that difference diminishes. DOF-calculator either let you specify the circle-of-confusion or use an implicit print size, traditionally an 8"x10" print viewed from 12" away by someone with 20/20 vision. | |
| Jun 14, 2011 at 21:51 | comment | added | Nick Bedford | How can a photo have more depth of field when printed smaller? The photo can't magically change itself to have more depth of field... | |
| Dec 21, 2010 at 19:41 | comment | added | RolandTumble | Just a pedantic note of narrow applicability: Tilt/shift lenses imperfectly mimic the capabilites of view cameras (unless you consider a view camera to be one big t/s lens...), so they, too, have "more than one" focal distance. | |
| Dec 21, 2010 at 16:31 | vote | accept | kacalapy | ||
| Dec 21, 2010 at 15:59 | history | answered | Itai | CC BY-SA 2.5 |