NAC Image Technology ST-839, User Manual

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Recording with Enhanced Sensitivity
Recording with Enhanced Sensitivity
Use the enhanced sensitivity function (GXC) to record at four times the sensitivity without any
increase in noise.
4-25
(00400)
Use the GXC function to increase the sensitivity about 4x without increasing the level of noise. However, the
maximum frame size is limited to 1/2 at 1280 × 960.
While the maximum frame size is limited to ½, the frame size limit does not change with the photographic
speed. The maximum photographic speed at the maximum frame size (1280x960) using the GXC function is
3,000 frames/sec. (

A
10-2)
The angle of view is twice the frame size when not using GXC. For example, with the GXC function ON, 2560
× 1920 has the same angle of view as 1280 × 960 when the GXC function is OFF.
■ Using the GXC Function

If using the GXC function, first set the frame size to 1280 x 960 or less.

In HX-4, the GXC function OFF is also hung horizontal 1280 and vertical 960, and is large
impossible.

Change the frame size (
 A
4-9)
１
Access the TOP MENU
(

A
3-11)

Access the TOP MENU from the STOP mode.
２
Select GXC with the up/down arrows

Use the up/down arrows to move to the
selected item (reverse display) and select
GXC.
３
Press the right arrow and select ON

Press the right arrow to turn the GXC
function ON.
If the frame size is larger than 1280 x 960,
the GXC function cannot be turned ON.

If making the frame size larger than 1280 x
960, turn the GXC function OFF and then
change the frame size.
GXC Function