Photron FASTCAM ultima APX-i2, Hardware Manual

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FASTCAM-ultima APX-i2 Hardware Manual
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5.4. Zooming (Zoom/Fit/Scroll)
In high-resolution mode (1025 x 1025 pixels or 1025 x 512 pixels) recording, the APX-i2
system records images in a higher resolution than standard NTSC or PAL video
resolution. In order to view the full image frame of recording on a video monitor, such
high-resolution images from the APX-i2 system must be reduced to fit the NTSC or PAL
video format. The Fit function of the APX-i2 performs this size reduction.
Relationship Between Video Formats and Resolution
1024x1024 Full Resolution
700x570 PAL
640x480 NTSC
When the APX-i2 records at a higher frame rate than 2,000 FPS (e.g. 10,000 FP), the
frame resolution of 512 x 256 pixels is much smaller than the standard video format. If
the recorded image is displayed on the video monitor, it looks as a small frame taking
only a portion of the full video screen. In this case, the playback image must be
expanded to fill the video screen. The APX-i2’s Zoom/Fit function performs this
expansion/fitting to display the playback image filling the full screen of the standard
video format.
The following pages discuss the function of digital video signal zooming and how to use
it.