## Image Correction: PTZ and Display Modes in Recordings

You can zoom and move the visible image area not only in live images but also in recorded images (PTZ). It enables you to examine specific image areas more closely while the recorded video stream plays back. On Dual cameras, the program also shows the slider. Use this slider to show the images of either the right, the left or both image sensors. When playing back the recordings of hemispheric cameras, you can set different display modes .

### Zooming and Moving Image Sections

You can zoom using the slider or the mouse wheel. To see other image areas, you can move the recorded image using the mouse.

### Choosing a Sensor

On Dual cameras, you can opt to see the recordings of the right, the left or both image sensors. To do so, move the slider to the right to (left sensor) or further to the right to (right sensor).

### Display Modes and Panorama Correction

When showing recorded images of hemispheric cameras or cameras with the lenses L12/B016, L23/B036, L25/B041, you can select different display modes. In order to get naturally-looking images, the camera will automatically correct the distortion in these modes. This distortion correction can be refined even further when using the panorama correction. Note that this type of correction only takes place locally. This means that the distortion correction of the recorded images only takes place on this computer. The stored recordings (from the camera or a file server) are not influenced in any way.

#### Select the Display Mode

- Full image: Shows the entire (distorted) full image.
- Normal: Shows a distortion-corrected image and allows executing PTZ actions. This is the factory default for hemispheric cameras.
- Panorama: Shows the distortion-corrected image of an entire room (corrected 180° panorama view) from the left to the right wall. The aspect ratio (width to height) is 8 to 3.
- Surround: Shows four image sections (one for each cardinal direction: N, E, S, W) in one joint view. Note that you can use PTZ actions to modify all four views independently from one another.
- Double panorama: This mode shows a panorama view for the Northern half of the image and a second panorama view of the Southern half of the image using an aspect ratio (width to height) of 4 to 3. This mode only makes sense for a hemispheric camera that is mounted to the ceiling.
- Panorama focus: This display mode combines the panorama view (aspect ration 8 to 3) with two smaller images (each with aspect ratio 4 to 3) in one large image.

Move the slider to the right until you see the desired view. This slider position will be stored automatically until you change it again.

#### Panorama Correction

The distortion-corrected images of the different display modes can be further refined using the panorama correction. Move the slider to the right to and use the mouse to correct the image. To store the corrected setting, click on the slider and hold it until the slider icon briefly appears in the center of the image.