Sony HXR-NX5U User Manual page 6

You can manually adjust the iris to control the volume of the light entering the
lens. By adjusting the iris, you can change or close the aperture of the lens,
which is expressed as an F value between F1.6 and F11. The volume of the
light increases the more that you open the aperture (decreasing F value). The
Volume of light decreases the more that you close the aperture (increasing F
value). The current F value appears on the screen. (For more information on
APERTURE check out our
1) During recording or standby, set the AUTO/MANUAL switch to MANUAL.
2) Press the IRIS button and the A (automatic) next to the iris value on the LCD screen disappears,
or the iris value(F-stop number) appears on the screen.
3) Adjust he iris with the IRIS ring to the F-stop that you are looking for.
* The F value becomes close to F3.4 as the zoom position changes from W to T even when you
open the aperture by setting the F value lower than F3.4
* The range of focus, an important effect of the aperture, is called Depth Of Field. The depth of
field gets shallower as the aperture is opened, and deeper as the aperture is closed. Use the
aperture creatively to obtain the desired effect in your outdoor videography. This is handy for
making your background blurred or sharp.
file:///Users/johannalc40/Documents/guide%20to%20the%20nx5u.html[10/25/12 2:40:02 PM]
Manipulating Depth of Field blog)
1. Large Aperture
2. Small Aperture