Sony DCR-TRV900 - Manual (Page 56)

56
About the depth of field
The depth of field is the in-focus range, measured from the distance behind a subject to the
distance in front. The depth of field can vary with the iris (F value) and the focal length.
Lowering the F value (large iris) reduces the depth of field. Raising the F value (small iris)
provides a larger depth of field. Zooming in telephoto position offers a smaller depth of field
while the depth of field in wide-angle position is greater.
The depth of field Shallow Deep
Iris Open (Low F value) Close (High F value)
Zoom Telephoto (T) Wide (W)
Using the PROGRAM AE function