# ViDiLabs Calc — CCTV Calculator

> CCTV calculator for lens focal length, object distance, pixel density, and storage. (iPhone/iPad app by ViDi Labs Pty Ltd.)

- Source: https://appshunter.io/ios/app/vidilabs-calc/id1054879397 (this page in markdown: same URL + `.md`)
- Developer: [ViDi Labs Pty Ltd](https://appshunter.io/developer/1054879396)
- Category: Utilities, Photo & Video
- Price: $18.99
- Rating: 3.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 12.0 · 9 MB
- Languages: American English
- Released: 2016-06-10
- Data updated: 2026-08-20
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/vidilabs-calc/id1054879397/reviews.md

## What is ViDiLabs Calc?

The ViDi Labs calculator helps you calculate the required focal length lens on a camera, or suggested distance to an object, in order to achieve the required pixel density (read clarity), compliant with various standards.
It also helps you calculate the required storage capacity for a given number of recording days or minutes (in case you need to export an incident on a USB flash drive).
It consists of two sub-applications, one called Visual and the other Digital.
Many surveillance standards or tenders would specify cameras in particular locations in a project so that facial identification or recognition is achieved at the particular area. To comply with such tenders is not easy because pixel density calculation depends on the sensor size, the focal length of the lens and the distance to the object, all interdependent.
The ViDi Labs calculator has all the right formulas to do it for you. 
It contains a database of all commercially available sensors, from the smallest up to the large format cameras (currently 102MP). 
All you need to know is the sensor your camera uses. 
With the latest version 2.0 of this app we have introduced manual entry of any of the variables (by double-tapping a window), including distances or focal length that are not in the scrolling picker data-base, or perhaps you use an "unusual" or new sensor size. 
In the Pixel Density area of the pre-set buttons on the right hand-side we introduced the correct pixel densities for Face Identification (FI), Recognition (FR) and Inspection, as per the Australian Standard corrigendum document for the IEC 62676-4: 2015. 
In this version, the FI is now 350pix/m, instead of 250pix/m, and the FR is 175pix/m instead of 125pix/m. Similarly, for the Face Inspection we now have the value of 1400pix/m, instead of 1000pix/m. 
These corrected numbers will help you design a better system. 
You can still enter, however, any value you desire by scrolling the window or manually entering by double-tapping.
In addition to the "facial" pixel densities pre-set buttons, we have also introduced pixel densities pre-sets for common projects such as Licence Plates Recognition (LPR), money and playing cards. Please note that these values are from our own testing and experience, and they do not exist in any standard as such. 
The CCTV industry is not the only field of use for the ViDiLabs calculator, because this app can be used by anybody with a digital camera, be that in photography, cinematography, or in machine vision, as it can help find the best lens, distance and camera settings for the clearest image. 
In the same Visual section, the ViDi Labs calculator also calculates moving object blur as they are recorded with various exposures. 
Such calculations are first in the industry and could prove extremely useful in systems used for automatic face recognition, vehicles automatic licence plate reading, reading the roulette wheels winning numbers and all other moving objects that need to be seen more clearly.
In the latest v.2.0 we introduced yet another new and unique calculations which considers the angle of the object motion relative to the optical axis.
Under the Digital sub-application, the ViDi Labs calculator also calculates the recording storage capacity for a given number of cameras, chosen length of recording, percentage of VMD and compression. 
Users can also enter the type of storage required (RAID type) and the calculator will advise how many hard disks are required to achieve the chosen number of storage days.
For the first time in the surveillance industry, it can also indicate the visual quality of the chosen compression by showing a simulation of the ViDi Labs test chart for the chosen compression (H.264 or JPG).
Last, but not least, in the v.2.0 update, we have introduced calculating of the storage needed of a short event, typically lasting a few minutes, which needs to be exported to a USB flash drive for for further analysis by third party or Police for example.

## Key features

- Calculate required focal length and object distance
- Determine required storage capacity
- Pixel density calculation for identification and recognition
- Database of commercially available sensors
- Manual entry for custom variables
- Moving object blur analysis
- Pre-set pixel densities for common projects


## Frequently asked questions about ViDiLabs Calc

### What is ViDiLabs Calc used for?

ViDiLabs Calc is a utility app designed to help users calculate optimal camera settings. It assists in determining the required focal length, object distance, and pixel density for cameras, as well as estimating video storage capacity. It also analyzes moving object blur for clearer imaging.

### How does ViDiLabs Calc help with CCTV standards?

The app calculates pixel density compliant with various standards, such as IEC 62676-4:2015, for facial identification and recognition. It provides updated pixel density values for Face Identification (FI), Recognition (FR), and Inspection, aiding in system design for tenders.

### Can I use custom camera sensors with ViDiLabs Calc?

Yes, ViDiLabs Calc supports manual entry of variables, including distances and focal lengths not found in its database. You can also manually input custom sensor sizes, allowing for flexibility with unusual or new sensor types.

### Does ViDiLabs Calc have ads?

No, ViDiLabs Calc does not contain advertisements. It is a paid application designed to provide a focused user experience without interruptions.

### What is the price of ViDiLabs Calc?

ViDiLabs Calc is priced at $18.99. This is a one-time purchase for the application.

### What devices is ViDiLabs Calc compatible with?

ViDiLabs Calc is compatible with iPhones and iPods. It is suitable for users who need these calculations on their Apple mobile devices.

### How often is ViDiLabs Calc updated?

The latest version of ViDiLabs Calc is 2.0.4, last updated on February 9, 2026. Updates typically address bug fixes and feature enhancements to improve functionality.

### What is the user sentiment for ViDiLabs Calc?

Based on available data, ViDiLabs Calc has a rating of 3.0 stars from 1 rating. This suggests a mixed to average user reception.

## Version history (last 5 releases)

### 2.0.4 — 2026-02-09

ui fixes

### 2.0.3 — 2026-02-02

Small bug fixes and UI improvements

### 2.0.2 — 2022-11-16

This is a major upgrade with additional functionality where users may enter manually any variable desired by double-tapping the active window and entering values via a virtual keyboard. Scrolling through pre-defined values is still possible, as long as the window is not locked (red border).
We have also introduced calculations for the storage required for the recorded footage in minutes by way of a switch “days / minutes”.
Thank you for your support with using the ViDiLabs calc.

### 2.0.1 — 2021-09-13

This is a major upgrade with additional functionality where users may enter manually any variable desired by double-tapping the active window and entering values via a virtual keyboard. Scrolling through pre-defined values is still possible, as long as the window is not locked (red border).
We have also introduced calculations for the storage required for the recorded footage in minutes by way of a switch “days / minutes”.
Thank you for your support with using the ViDiLabs calc.

### 2.0.0 — 2021-08-20

This is a major upgrade with additional functionality where users may enter manually any variable desired by double-tapping the active window and entering values via a virtual keyboard. Scrolling through pre-defined values is still possible, as long as the window is not locked (red border).
We have also introduced calculations for the storage required for the recorded footage in minutes by way of a switch “days / minutes”.
Thank you for your support with using the ViDiLabs calc.

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