Zoom
Cinema zoom, non-linear stretch, and constant image height controls.
Enable Zoom
Zoom must be enabled via the Enable Zoom toggle at the top of the menu before any adjustments take effect. When disabled, all zoom parameters are ignored.
Parameters
| Parameter | Type | Default | Range | Step | Description |
|---|---|---|---|---|---|
| Enable Zoom | Toggle | Off | On / Off | -- | Enable cinema zoom processing |
| Constant Image Height | Toggle | Off | On / Off | -- | Maintain consistent image height for anamorphic content |
| Align | Selector | Center | Center / Bottom / Top | -- | Vertical alignment mode (cycles through values 1-3) |
| Scale X | Float | 1.0 | 0.5 -- 3.0 | 0.05 | Horizontal zoom scale |
| Scale Y | Float | 1.0 | 0.5 -- 3.0 | 0.05 | Vertical zoom scale |
| Offset X | Float | 0.0 | -0.5 -- 0.5 | 0.01 | Horizontal offset |
| Offset Y | Float | 0.0 | -0.5 -- 0.5 | 0.01 | Vertical offset |
| Stretch X | Float | 1.0 | 0.5 -- 2.0 | 0.01 | Horizontal pixel aspect ratio |
| Stretch Y | Float | 1.0 | 0.5 -- 2.0 | 0.01 | Vertical pixel aspect ratio |
| Anamorphic Stretch | Toggle | Off | On / Off | -- | Apply stretch after centering and NLS |
| NLS Enabled | Toggle | Off | On / Off | -- | Fill the bars left by CIH with a non-linear stretch |
| NLS Amount | Float | 0.0 | 0.0 -- 1.0 | 0.01 | How far to stretch the picture out toward the screen edge |
| NLS Center Keep | Float | 0.45 | 0.0 -- 1.0 | 0.01 | Fraction of the picture held geometrically exact |
| Screen AR | Float | 1.78 | 1.0 -- 3.0 | 0.01 | Target screen aspect ratio |
A Reset to Defaults action at the bottom of the menu restores all zoom parameters to their default values.
Recommended Settings
For standard 16:9 content on a 16:9 display, leave all settings at defaults. For 2.35:1 or 2.40:1 anamorphic content on a 2.35:1 CIH projection screen, enable Constant Image Height and set Screen AR to match your screen's aspect ratio.
Constant Image Height fits content by height, so anything whose aspect differs from the screen's is left with bars: pillarbox when the content is narrower, letterbox when it is wider. NLS Enabled fills them. It acts on whichever axis the bars are on, so there is no axis to choose.
NLS Amount is the ramp: 0 leaves the bars alone, 1 stretches the picture out until it meets the screen edge.
NLS Center Keep is the one to reach for if the result looks over-stretched. It sets the fraction of the picture held geometrically exact -- inside that band the image is identical to what you would get without NLS, so faces and circles keep their proportions, and the entire aspect difference is absorbed by the sides instead. Raising it widens the untouched region and works the edges harder. The request is capped at whatever the current aspect conversion can carry without the falloff folding: at 16:9 on a 2.40:1 screen that ceiling is about 61%, and a wider gap such as 4:3 on the same screen allows less, because there is more to absorb.
Menu Path
Main Menu > Zoom