Ultrawide SL183 Lens Examined

By: John Honovich, Published on Sep 02, 2010

Theia has announced a new addition [link no longer available] to their ultawide angle lens lineup - the SL183 [link no longer available]. This note examines its positioning and differences from Theia's existing lenses [link no longer available].

  • The SL183 is Theia's first varifocal lens offering a focal length of 1.8 to 3.0 mm providing a Horizontal FoV of approximately 85-110 degrees (depending on imager size of camera). The varifocal capability allows for optimizing the specific field of view for customer's preferences.
  • The lens is designed to stay in focus even if you change the magnification/zoom. They are referring to this as Truezoom (and is similar to SLR zoom lens functionality). The lens is not motorized and cannot be controlled remotely by the camera.
  • The lens is moderately shorter than other Theia lenses (50mm vs 56mm or 59mm for other Theia lenses). Theia reports that this will allow the lens to better fit in some dome housings.
  • The SL183 is rated for 5MP resolution.
  • The SL183 is positioned as a complement to to their existing lenses. While those lenses provide wider FoV, this lens provides varifocal capability and a smaller form factor.
  • The MSRP of the SL183 is $299. The SY110 [link no longer available] has an MSRP of $248 (similar max focal length but fixed focal length). The SY125 [link no longer available] has an MSRP of $440 (widest FoV offered).

For more information on Theia, review our test results on their widest lens - the SY125M.

1 report cite this report:

New Products Reviewed Fall 2010 on Oct 12, 2010
In this report, we aggregate all our new products reviews for Fall 2010 announcments. Products Reviewed The following new products are reviewed....
Comments : Members only. Login. or Join.

Related Reports

Camera Resolution Usage Statistics 2020 on Mar 12, 2020
The average resolution used, for new cameras, is now 4MP, according to new IPVM statistics, continuing the rise that we have mapped from 2014,...
Phone Camera Calculator Released on Mar 10, 2020
IPVM has released the first-ever Phone Calculator, video surveillance design software that you can use on your phone, without installing an...
Video Surveillance Cameras 101 on Feb 25, 2020
Cameras come in many shapes, sizes and specifications. This 101 examines the basics of cameras and features used in 2020. In this report, we...
Camera Field of View (FoV) Guide on Nov 13, 2019
Field of View (FoV) and Angle of View (AoV), are deceptively complex. At their most basic, they simply describe what the camera can "see" and seem...
IPVM Camera Calculator User Manual / Guide on Oct 16, 2019
Learn how to use the IPVM Camera Calculator (updated for Version 3.1). The guide below includes instructions, images, gifs, and videos...
Camera Focusing Tutorial on Oct 14, 2019
Camera focus is fundamental to quality imaging. Mistakes can significantly reduce details, making cameras less effective. In this guide, we...
Hanwha Announces 32MP Camera + AI Line on Sep 10, 2019
In the first rise in maximum megapixel resolution in 5 years, Hanwha has announced a 32MP / 8K camera directly competing with Avigilon's H4 30MP /...
Lens Iris Tutorial on Aug 08, 2019
Cameras, like humans, have irises, controlling the light which hits the imager and impacting image details. However, cameras have multiple types of...
Lens Focal Length Tutorial on Jul 10, 2019
3mm, 6mm, 2.8 - 9mm, 5 - 50mm, etc. Camera specifications often list lens lengths but what do they mean? These metrics are important in...
Spring 2019 50+ New Products Directory on Apr 08, 2019
We are compiling a list of new products for Spring 2019 and have over 50 already. Contrast to Fall 2018 New Products Directory and Spring 2018...

Most Recent Industry Reports

FLIR New Coronavirus Prioritized Temperature Screening Camera Examined on Apr 03, 2020
FLIR has announced a new series of thermal cameras "prioritized for entities working to mitigate the spread of COVID-19 virus", the A400/A700...
ADI Branch Burglary on Apr 03, 2020
A security systems distributor branch is an odd target for burglary but that happened this week at ADI's Memphis location. Vehicle Smash &...
YCombinator AI Startup Visual One Tested on Apr 02, 2020
Startup Visual One, backed by Silicon Valley's powerful Y Combinator, aims to be "Your 24/7 Watchman" with advanced analytics and object...
Free IPVM Memberships For The Unemployed on Apr 02, 2020
IPVM is giving 3-month free memberships (regular price $99) for the unemployed, no questions asked. To get it, just contact us, your request...
Dahua Faked Coronavirus Camera Marketing on Apr 01, 2020
Dahua has conducted a coronavirus camera global marketing campaign centered around a faked detection. Now, Dahua has expanded this to the USA,...
Video Surveillance Trends 101 on Apr 01, 2020
This report examines major industry factors and how they could impact video surveillance in the next 5 - 10 years. This is part of our Video...
USA's Seek Scan Thermal Temperature System Examined on Apr 01, 2020
This US company, Seek, located down the road from FLIR and founded by former FLIR employees is offering a thermal temperature system for the...
Terrible Convergint Coronavirus Thermal Camera Recommendation on Apr 01, 2020
A week after Convergint disclosed falling revenue, pay and job cuts, Convergint is touting 'extensive research' that is either grossly incompetent...
The IPVM New Products Online Show April 2020 Opens With 40+ Manufacturers on Mar 31, 2020
IPVM is excited to announce the first New Products Online show, with 40+ manufacturers, to be held April 14 to the 16th, free to IPVM members,...