> ## Documentation Index
> Fetch the complete documentation index at: https://landinglens.docs.landing.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Lense (Optics)

export const vp = 'Visual Prompting';

export const smartLabel = 'Smart Labeling';

export const productLL = 'LandingLens';

export const mi = 'Mobile Inference';

export const llsf = 'LandingLens on Snowflake';

export const companyName = 'LandingAI';

*This article applies to these versions of LandingLens:*

<table>
  <thead>
    <tr>
      <th>LandingLens</th>
      <th>LandingLens on Snowflake</th>
    </tr>
  </thead>

  <tbody>
    <tr>
      <td><span class="check-icon">✓</span></td>
      <td><span class="check-icon">✓</span></td>
    </tr>
  </tbody>
</table>

The purpose of a lens is to collect the light scattered by an object and recreate an image on a light-sensitive image sensor.

We’ve defined the key factors that should be considered when choosing optics in the following table.

| Lens Factor                 | Definition                                                                                  |
| --------------------------- | ------------------------------------------------------------------------------------------- |
| field of view (FOV)<br />   | The total area that can be viewed by the lens and imaged onto the camera sensor.<br />      |
| working distance (WD)<br /> | The distance between the object and lens where the image is at its sharpest focus.<br />    |
| depth of field (DoF)<br />  | The maximum range where the object appears to be in focus.<br />                            |
| magnification<br />         | The ratio between the sensor size and the FOV.<br />                                        |
| optical resolution<br />    | The minimum distance between two points that can be distinguished as separate points.<br /> |

## Keep the "Big Picture" in Mind

Choosing the right lens is just one part of setting up your image capture system. Make sure you also select the right [camera](./cameras) and [lighting](./lighting).

The guiding principle in developing your camera, lens, and lighting system is that it should lead to reliable and repeatable results. Good data in leads to good data out.