JVC GYHM150U Manuel D’Utilisation

Applicable to: Manual shooting mode M

The aperture value (F-number) of the lens can be set as 
follows.

● Press the [IRIS A/M] button to set to the Manual Iris mode.

● The current F-number is displayed.

● Turn the iris dial.

● The selected F-number is displayed.

 Setting values
F1.8 - F8.0 (14 steps)
The open F-number of the aperture varies according to the zoom 
position.
Wide [W] end : F1.8
Tele [T] end

: F2.8

 1/3-step display when zooming to the tele [T] end
When the aperture is set to F1.8 at the [W] end of the zoom range, 
the aperture value may fall below the open F-number when zoomed 
to the [T] end. In this case, the aperture value is not fixed, but 
changes according to the open F-number of the respective zoom 
positions. The F-number nearest to the open F-number is displayed 
in 1/3 steps. (F1.8, F2.0, F2.2, F2.5, F2.8)

 Setting aperture to AUTO

Applicable to: Manual shooting mode M

● Brightness of a specific area can be corrected 

automatically to the optimal state by selecting one of the 
three photometry areas indicated by the frames on the 
screen or the area of the entire screen.

● Set using [AE Area] in the [Camera Function] menu.

● When the entire screen is selected in [AE Area], the brightness 

of the entire screen is automatically adjusted to an optimal level.

● The [AE Area] screen in the [Camera Function] menu opens.

● Photometry area frames are displayed at the center of the 

screen.
• Select a photometry area from the left, center, and right 

frames on the screen or the entire screen.

● Select a photometry area by pushing the set lever up/down 

or to the left/right.

● When the entire screen is selected, push the lever to the left/

right to select the left/right photometry area frame, or up/
down to select the center photometry area frame.

● When any of the left/center/right photometry area frame is 

selected, push up or down to select the entire screen.

● Press the center of the set lever.

● The confirmed photometry area is displayed, and the 

photometry area icon appears in white. (except when the 
entire screen is selected) 

● Brightness within the frame is always automatically 

corrected to an optimal level.

 Locking the brightness of the photometry area

● The photometry area frame disappears, and a lock icon (L) 

appears.

● The automatically corrected brightness within the 

photometry area is locked. (AE Lock)

Decrease

The subject appears brighter.
The focused range becomes sharper, while the 
background is blurred to produce a soft image.

Increase

The subject appears darker.
Background of image becomes focused as well.

IRIS A/M

USER1

A

B

FOCUS

ZOOM

ON

ND

FILTER

OFF

USER2

AF/MF

FULL AUTO

GAIN

L-

M-

H-

B-

A-

PRST-

WHT.BAL IRIS A/M

Iris Dial

Photometry Area 
Frame (Green)

GY-HM150U.book  Page 36  Monday, September 5, 2011  1:48 AM