Owner manual

PIX 270i User Guide and Technical Information

v. 2.10 Features and specifications are subject to change. Visit www.sounddevices.com for the latest documentation.

Video Scaling and Frame Rate Conversion

Orange: No 3:2 pulldown sensed in 60i/59.94i input signal.

Input video is being converted to 24p/23.976p using a conver-

sion process which drops frames and may introduce judder.

White: 3:2 pulldown sensed in 60i/59.94i input video signal.

Input video signal is being converted to 24p/23.976p using 3:2

pulldown removal which recreates 24p/23.976p as it is cap-

tured from the camera’s shutter.

It is important that 3:2 pulldown be sensed before beginning a recording. If recording begins before 3:2

pulldown is sensed, 3:2 pulldown will not be applied properly.

Up and Down Conversion

Standard-deﬁnition video resolution employs a 4:3 aspect ratio, and high-deﬁnition video resolution

employs a 16:9 aspect ratio. Up-conversion is the process of ﬁtting standard-deﬁnition video (with a

4:3 aspect ratio) into a high-deﬁnition, 16:9 frame. Down-conversion is the opposite process.

The PIX 270i has various options for up and down conversion:

Down-Conversion

Letterbox: Maintains the same height and width ratio. Results in blank bar at top and bottom of im-

age.

Crop: Left and right side of image is cropped to ﬁt into 4:3. Results in missing image at sides of pic-

ture.

Anamorphic: Image is horizontally squashed to ﬁt into 4:3. Results in a narrow looking image.

Letterbox

Crop

Anamorphic