Lowering the shutter speed allows the camera's sensor to capture light for a longer duration. This can result in motion blur, as any movement of the subject or the camera itself during the exposure will blur in the final image. Increased noise, darker images, and reflections are not directly caused by lowering the shutter speed.

A 1080p resolution sensor is also known as a full HD sensor. 4K and 8K sensors have higher resolutions than 1080p, while an HD (often referring to 720p) sensor has a lower resolution. Therefore, a full HD sensor is the one that has a 1080p resolution.

When using an external IR illuminator, if the beam angle is significantly narrower than the field of view, the illumination may only cover a portion of the scene being viewed. This can result in uneven exposure, where some parts of the image are well-lit and others are underexposed or even completely dark.

The AXIS P3807-PVE and AXIS Q3819-PVE are multi-sensor cameras. These types of cameras utilize multiple sensors to capture a wider field of view or provide higher resolution imaging, often used for panoramic or 360-degree surveillance coverage. Both of these models are explicitly designed for such purposes, making them the correct choices.