Testing EF Lenses On IP Camera

Author: Ethan Ace, Published on Nov 23, 2016

Glass.

IP cameras are often characterized as using lower quality 'glass' and that those lenses reduce image quality. By contrast, Canon EF lenses are widely viewed as superior and for higher quality photography work.

What if you put an EF lens on an IP camera? Would it make the image quality better?

We tested one of these models, the 70-200mm Canon EF70-200L against a high end Computar varifocal model, the 25-135mm H5Z2518C-MP, both on Axis' high end Q1635.

*****.

** ******* *** ***** ************* ** ***** ***** ******* '*****' *** that ***** ****** ****** ***** *******. ** ********, ***** ** lenses *** ****** ****** ** ******** *** *** ****** ******* photography ****.

**** ** *** *** ** ** **** ** ** ** camera? ***** ** **** *** ***** ******* ******?

** ****** *** ** ***** ******, *****-***** ***** ****-*********** * **** *** ******** ********* *****, *****-***** ********-**, **** ******' **** *** *****.

[***************]

*******

** ***** ****** *** ******* **** ****** ********** **** ******* CS ***** ****** ** **** ******, ********* ****** ********* ** details *********. *******, **** ***** **** ***** ****** ****** ****** in *** ***** **** ** **** ****** *** **** ******, ******* ********* ** **** ****** *** ******* ******** ** similar *** ****** ***** ******* ***** *******.

************, ****** ** *********** *** ********* ******** *** ***** (**** longer) ****** *** ***** **** **** ******* ***** **** *********** them. 

*** ****** **********, *** **** *** ******** ***** **** **** image ******* ** ******** ** **** ******, ** ****** *** ** worth *********** *** *** * ***** ******* **** ***** *** increased **** *** ****.

*******

** **** ******* ****** ******, **** ~$*** *** *** **** fixed ****** ** ********* ** ******* *** **** ***** ****** varifocal ******. *** *******, *** **-***** **** **** ** **** test ***** ****** ******* ***** $*,*** ***, ***** * **** ***** ********** *** ~$***. ******* **** ** ******* */** ***** ******, ***** ********* sell *** ~$***, **** *** **** ********* ****** ~$***-***.

*** ******* **** ** ******* ** ****** ** *** ** cameras ** **** ********* *** ~$**.

Lens *************

** *** *****, ** *** ** ****** **** ** ***** lenses ******** ******** ** ******** ** ***** ****** ***** *** adapter ****. *** **** **** ****************** *****.

********** *** ** ***** **** ** *** **** **** ******** *********. When ********** ** ** **** **** ** ***** ******, ********* the **** ****** ******* * ******* **** ***** ** ***** into *****. **** ****** ** **** **** **** **** ******* twist ******* **** *** *******, **** **** ******* **** ** cameras, *** *** **** *** *** **** **** *****. ***** should **** **** *** **** ** ****** **** *********.

Test *********

*** ***** ***** ***** *** ******* ****** ******, ******** ** ~320' *** ********* ** ~***' ** ** **** *****. 

Depth ** ***** ******

**** **** **** ***** **** ***** ****** ****** **** ** *** EF *** ** ****** ****** ****,***** ** ***** ********* ****** * *******. *** *******, **** ***** ********* *** the ****** **** ** *** ***** *****, **** ******* ****** blurry (~***' *** ******, *********** ** ***). 

******* ** ***** ******, *** ****** *** ********* ****** ****** image ******* ** **** ******** ** ********* ********* ***** ********. *** camera ** ** ******* ***** ** **** ** *** *********** below.

Image ***********

*** ** *** **** **** ***** ****** ** *** ** models **** ** *** *******, ** ******* *** ***** *** very **** *****, ~***' (*** ***** **** ** *** ***** *****).

** **** ********, ******* ********* ** *** ** **** *** notably *********, **** *** ******* ********** ****** ** *** ** mount *****. ***** ********** ** ************* ******* ***** **** ******, with *** **** ****.

** ~***' (~*****), *********** ****** **** **********. ******* ******* *** similar, *** ***** ********** ** ********* ** *** ** ***** lens.

*******, ** ~***' (~*****), ******* ******* *** ***** *******, *** legibility ***** ******** ********* ** *** ** ****.

Calculation **********

******* ** ****** *** ********* *** **** ** ************ ** with */**-***** *******, ***** *** ******* ******* *** *********** ***** of ****, ** **** *********** *** **** ***** ****** **** as ** ** *** ******* ******* *** ***** ******* **** as */*" ** */*", *** ** **** ******* *** *** EF ** ** *******, ***** **** ********** ***** ******.

** *** *****, ** ********** ****** ***** ** **** ** measuring ********* *** ***** ** * ******** ********. *** *******, setting *** ***** ** **** ** *** ******* ***** ****** (200mm) ******** ** * *' *** (*** ***** ** * standard ** ******* *****) ** ~**', ***** ******* ** * ~*.* degree ********** ***** ** ****. 

***** **** ****** **** ** ****** ** ******* ***** *** error ** *** ***** ** ******** ****** *** ***** ** view **** ***** ***** ******. 

Larger **** ****** ******* ******

** ****** *** **** ****** ******** **** */** ***** ******, and ********* **** ****** ** ******. ******* ** ****, ***** must **** **** ***** ******* ******** **** *** *** ****** ******/**** combination, ** **** *** **** *** ******* *** ******/** ***** lens *******, **** *******.

************, *** ***** ***** ** **** ******** *** *** ** large ****** ** *** *** ****** ** ****' ********. ************* offering ****** ****** ******, **** ** ******** ******* ********* ********* ****** ******** **** ** *********** *-**** ********** *** **** ****** ***** ******* ******* ** ****.

Comments (24)

******** ***** ****** **** *** ***** **** *** **** *** their *-****** *****, ***** ** *** ***-**-***-**** ***-***** *****. *** can *** *** ****-*** ** (***-*) *** ***** * ***** the *****.

****** *** ***** **** **** ********* **-***** **-*** ** ***, F/2.8 ******, ** ***** */* ** */* *** ***** ** the *****.

*********** ****!

** *** ***** **** *** ** *** ******** ** *** real ****** ** *** ********* *********** ** *** ** **** vs *** ********?

**** ******* ***, **** *** ** *** * ****** **** the **** ******** **** *** ***** *** ********** *** ******* changing ***** *******, ***** *** ****** *** *********** ** *** two ******* ** ******** ** *** **** ***?

** ***** *** ** ** **** ****** ** *** ***** distances ** **** ****, ******* ****** ****** *** ********* ** render * **** **** ****** ***?

***********!

**** ******* **** ** ** ** *** ** ***** ******* that *** ***** *** *****'* **** **************?

***** ****! * ***** **** ** *** * ******* **** using *** **** ***** **** ** ***** ****** **** ** releases ***** **** *** ***** * ****** ***** **** ***** options **** *****, *****, ******, ***.

**'* ***** *** **** ** ** **** * **** ** clear "****" ** *** **** * **** **, **** ***** expensive **** **** *** ******** ******. ***** ** * ****** misunderstanding **** **** ********* *** **** "************ *******" **** *** better, ***** ** *** ****. *** **** ******* *** *** discussed ***** **** ********* ******, ** *** ** ***** **** of ** *************.

********* **** *** ******** *** ********* ***** ****, ***** ***** big ** **** ** *** *********** ****** **** ***** */** mount ** *** ****. *** *******, ** */*.* **** ** sensor, ** ***** *** **** ** **** > *****/** (**** Pairs *** ** ** ******) ** ***** ** ******* *** full **********, *** ******* ** **** ** ******** ** **** > *** **/**, ** ** *** *** **** ** ** lens *** **** *** * **** *** **** ********** ******.

*******, ** **** */* **** ***** *******, ** **** ***** to **** *****/** ** ******* *** ******, **** **** ******* EF **** *** ** ****** **** ******* */** ***** ****. the ***** ** **** **** ******* **** **** **** ***, and *** **/** ** **** ******, ***** *** ** ******* to *** ****** **********, ****** ********, *** **** ***** *********.

********** **, **** ** ****** ****** (**** */*), *** *** resolution (***** *** *****), ** (****** *****) **** *** **** noticeable ****** *********** **** ******* */** ***** **** (***** ***$).

*** *******, ** */*.* **** ** ******, ** ***** *** lens ** **** > *****/**...

** *** ***** **** **** ******** **** **** **** ***** with * ** ****** ******** ******** *****?

** *** *** **** ** ** **** *** ****...

*** *** *** ****** **** ******* *** **** **** *** MTF ** *** ****** *** *** ****** ***** ** * lens.*** ****'* *** **** ** *** **** **** **** ***** cctv *******.

********, ** ******, *** ***** *** * *** **** */**-***** lens **** ******* ***** *****/**, ** ** *** ***** **** lens.

*** **** ** *** ****** ** ** ****, *** ********** is ******* ***** *** **/**, **'* *** ******** ** ** that ****. ********* ** * **** ***** ******, *** ********** is "*** ****" .

**** ***** ***** **** *** **** ***** ****** ** ******* designed ** ******* ********, ***** *****, ** *** > *** LP/mm ** * **** ***** ******. ******** *** **** **** MTF ** ******, *** ****** ** **** *** * ********** of ***** *** **/** ****.

** *** **** **** **** ***** ***** **** ** */*.* inch ** ******, *** ***** **** **** **-***** **** *** better **********.

***** **** **** *****-***** ****** ******* *** ***** **** **/**, like *** **** **** ** *******, *** **** **** ** Gopro *****.

*** ***** *** * *** **** */**-***** **** **** ******* about *****/**, ** ** *** ***** **** ****.

***** ****, ****'*?

*** **** ** *** **** ******** **** ***** **** ****** for **** ******.

**. ****** *** ***** **** **** ***** ********** **-***** ***** lens.

***, *** *** **** ** **** **** ** *********, **** ** *** ******* *** **/** ** *****?

**** ** **** ********** **** *** ****** ** */*" *** 1080p, *.* ****** ***** **** ***** ***** **** **** * lens **** *** **/** ***** ********** *** ******. (***** ** math, ******)

** ****** / ***** ******* *** ****** ** *** ****?

@*****, ** ***** *** ******** ** ****** **** **** ** a ** ** ****** ********** ******?

** **** *** *** ** **** ** *** ****** *** resolving ** ******* ****** **** *** ******* ***** ***** *** discriminate.

* ***** *** **** **** ***... *** *******.

***** *** **-*** ***** * **** ** ** ********* ****, but **** ******* *** **** *** ************ ****, * ******* price **** ***** **** *** ****. ******* ***** ***** ***** length *** ****** **** *** ****'* *** ******* *** ** a ***** **** ***********. * ***** ****** ***** **** */*.*, higher *****, ** ***** ****** *** ** **********. * ***** suspect ********** *********** ********* *** ***** **.* **** ** **** to * ****** ***** **.* ** **.*.

*** **-***** ***** **** **** **** *********** *** ** ****** ******* ***** ************ *** ********* ******** ** *** ****. **** ***'* ***** focus ** *** ******, *** ** *** **** ** ******, they ********** **.

**, ** *'* **** ******* **** ****** **** ****** ** I ****'* **** ** ** *** *****-******, *** ****** ***, I **** * ********.

*** *** ****** **** * ****** ****** ****, * **** obtained * ***** ***-*****-** *** *** ******, *** **** ******** CS>EF ***** ******* **** ** **** ****, *** * ***** 55-250mm **** **** (*******************) **** * **** ******** ** ******* **** *** *******. I've **** ******* ** **** *** **** *** *****, *** I've *** **** **** ****** **** *'* ****** ******* *** point ** ** *** ***** ********* **. *'* ********** ***** on **** ***** ** *'* **** *****'* ********* ****** ** straightforward **** *'* *******, *** *'* ***** ** **** ** mind **** ******* **** ** ** ***** ** ********* ***** imposed ** *** ******/*******/****.

** **** * **** ***** *****, * *** **** *** the ****** ** ***** ****** * ****** ****** **** *****. Regardless ** **** ******** * ****** ** *** ****** ** anything ****, ******** ******** *** ***** ** *** ****** ******** itself, ***** *** **** ***** ** *** **** (******** **-**% of *** ******) **** * *** ***** *** ** *****. I ** **** ** **** *** ****** ** ******* ***** and *** ** ** *****, *** **** * *** **** it ** ** ***** ***** ** ** *** *** ** to ***** *****. ***, ******** ******* ** ***** ******, ** simply *****'* ****. **'* **** *** ****** *****'* ******* *** ability ** "*****" ******* ** ***** ******, *** *** ***** ring ** *** **** *****'* ******* **********.

** ***** ********* * *** ****** ** *** ****** ** help **** ****? ******* **** *** **** **** ***** ** causing ****, ** *** * *** *** **? * **** some **********, *** *'* ** ******* **** ******** **** **** thinks, ******* **** ***** ** ****** ** *** "***" * lens ****/***'* **** ** ***** ** ***** ** *********.

*** *** ******, *** **** *********** **** ** *** ** that **** ** *** ***** **** * *** *** ** to **** **** ******* ** ********** ********* ***** (>** ***) at **** **** **** ****, **** * ***** ** ***** of **** **** ****. ** * *** ****** *** *** to *** *** ***** ** *****, *'* **** ** ******** winner ** ** *****...

***** *** *** **** **** ****? *'* *** * *********** expert ** *** ***** *** ********** ***** **** **** ***** things **** ***** ****** *** ** *** **** ** ** "reset" ** ** **** **** * ****** ***.

** ***** *** ****** ******** *****, * ***'* **** *** for ******** *** *** **** ****** ****** *******: ** *** lens *** ** ** (****** *****)? *****'* * ****** ****** at *** **** ****** ** *** **. ** **** ******, it ********** *** ***** *** ******* *** ********* ***** ** AF ****, ** ****** ***** ***'* ****.

******* ***** ********, *** *** ********* *** ***** ******'* *********, then *******, **** ************? ********* ** **** * ***** ** how *** ** *** *****, *** ** **** ***** ******* like **** **'* ********* ********.

*****, ***** ***. * ********** *** ****** (*** ********) *****.

***, * ** ******* ** **. * **** **** ******* once **** ********* **** *** *****, *** **'* **** ** MF *** ******.

* **** ***** ***** *********** ** *********, ****, *********. ****, backfocus, *********. *** **** *** *** ***** **. ** ******, no ********** ** *** ******.

* **** *** **** ***** ******** *** ******* *** *** what *******. *******, *'* *** **** **** ** ***** **** a **********, ******* * **** ** ***** **** *** ******+**** to *** ** **** ** *** ***** ******, ** ** appears **** ** ***** ** **** **** ***** **** ****** way? ***** ** ** ***** **** **** ******** ****, *******?

**** *'* ** ****** ********** ** *** *** ****** ***'** getting ** **** *****, ** ***'** ******* ** *****.

* **** **** **** **** ******* *** *****.

*** *** *** ** ** ****, ** ****** **** *** lens ***'* ******* ******* ** *** **** ***** ** *** sensor - ***** *** ******* ***'* ***** ******, ** ** cross-threaded *** ******* *******, ** ********* ******* ** ******** * "tilt-and-shift" ******.

****'* **** * ****** ***** ****, ** ****** ****, *** is ******** * ****** *****-*****, ** ** *** ***** ****** is ***** ********* ** *** *****, ** *** ** ******* the *****, ** **** *** ***** ** *** ****** ** the ** *******. ****, ***, ***** ********* *** *-* ******.

** ****** **** *****, ****** ****** **** ** ***** ******** help ******** *** *******.

****, ***** *** *** **** *****. **** ***********.

* **** **** *** *******, *** *** **** **** "***" off *** ***** ** *** ****** ** ***** */**" ** an **** ** ********. *******, * ******* *** ******** ***** lens (**-**) **** * *** **** *** ******, *** ** does *** **** *****, ** ****** *'** ********* ****** ** weakened *** ***** ** *** ***** ** *** ******, * don't **** **** **** ** * ***** ** *****. * can *** ** **** *** **** ***** *****, *** **** as **** ** * **** ******* **** **** *****, * don't **** **** **** ** * ****** *******. * *****, of ******, ** *****.

*** *** ****** *'* ******* **** *** ** *****, **** are ********* ** *** **** **'* *** ***** *******. ***** is ******* ************ ** *** *****, *** ** ******* ** the ****** **** ******* ** **********. * *** **** **** a ******* **** ******* *** **-***** ******* **** *'* ***** is ******** "******* **" *** ******** ** *** ****** ** the ****** ****** * ******* *****, *** * ******* *** I ***'* ******* **** ** ** ******.

*'* ******** ** ******* **** ***** *****'* ***** ***** ***** the **** ***** ** "*****" ***** ** **** ** **. There ** ** ***** *********** *** *** *** ***** **** wouldn't **** ** *** **** **'* *** *** ****** ** far ** * *** ****...*** *'* **** *** **** ** the ***** **** *** **. **** **** ** **** ***** and **** ***....

******** **** *** "*" ** ** ****** *** "*****", *** a ** ***** ***** *** **** * *** ****** ** the ****** **** * *-*****, ** **'* ******** ** **** focal *******, *** **** ******* ** *** **** ** ******** bumping ** ******* *** ******, ** ** ****** *** ***** to ** ** ***** ********.

*****'* ****** ******** *** * ******* *********: *** ***** **-* series ****** *** * *** ****** ** *** ****** **** the ** ******, *** *** ******** ************ *** *** **** sensors ** ***** ******** *** ******** *******. **-* ****** **** an ********** *** ** **** **** ******** **** ***** ******* to ** ******* (** ****** **** **** ** **-* *******), but **** *** *** ** *** ***, ******** *** **-* lenses ** ** **** ** ** ******. ***** *** ******** to ****, ************ ******** *** *** ** *****-****-***** ****** **** the **-* **-**** ** ** **** ** ****-***** *******, *** it's * ****** ***********, ******* *** **** ******* *** ********* with ** ***'* ******** ******, *** ********** *** ** ************ bad **** ****-***** ******.

** ******* ***** ******* ********, ** *** ** ** ** something: ** *** ******* ** ******** *** ** ******, ** EF-S *** ****** ** ******* *** ***** ** *** ****** to ***** ********. *** ***** *** ** *****'* ** **-**-* adapter *********, ** *** * *-**-** ******* ** *** ***** to **** *** **** * ****** ******* **** *** ******.

***** ******?

Ethan *** ** * ****** ***.

****, ****'* ** ***** **** ** *** ***** ******.

*** **** **** ****** ***** **** *** **** *** **** ring *************. *** ************** ***** *** *** **** **** **** *** ****** ** powered.

*******, **** ***** *****'* **** ***** *** ***** ** *** camera ******* ** *****, ********* ******* **. ** ****** ** working **** **** **** ** ***** ** **** ** ***** I ***'* *****, ** ** ***** **** ** *** ***** adjustments **** *** ****** *** *** ***** *******.

**, ** **** **** ** ** ****** **** ****** *** work ** ******* * **>*>** ******* ** *** ** ********* the **** **** **** *** ****** **** **** ******* ** ability ** ***** ***. *'** *** * *** ****** *'* going ** **** ** **** **** ** *** **** *******, but ** ****** **** *** *** ******** ** *****, ****** share ****.

Login to read this IPVM report.
Why do I need to log in?
IPVM conducts unique testing and research funded by member's payments enabling us to offer the most independent, accurate and in-depth information.

Related Reports on Lenses

Hikvision PanoVu Multi Imager Tested on Feb 08, 2017
Hikvision has entered the multi-imager market with their 180° PanoVu DS-2CD6986F-H, an 8MP, 4-imager model equipped with ~1/1.8" imagers and...
Avigilon Pro 4K Camera Tested on Jan 03, 2017
Avigilon is best known for their large sensor, high megapixel cameras. But with new offerings from Sony and soon Axis, the questions is how well...
Lens Iris Tutorial on Dec 19, 2016
Cameras, like humans, have irises. However, cameras have five types of iris options - fixed, manual, auto, P iris. In this tutorial, we explain the...
F-Stop Tutorial on Dec 16, 2016
To understand low light surveillance, appreciating the importance and role of the f-stop metric is critical. In this tutorial, we explain: Why...
Genetec Lower Cost Sharp V LPR Camera on Nov 23, 2016
Genetec has announced the latest offering in their AutoVu Sharp line, promising new features, simplified installation, and lower price. In this...
PTZ Camera Guide 2016 on Sep 15, 2016
Pan/Tilt/Zoom cameras remain critical parts of many surveillance systems, especially in large security operations. Because of this it is important...
Axis / Canon Launch 20MP Avigilon Rival on Sep 12, 2016
For years, Avigilon has essentially owned the 'super high resolution' single imager market. And Axis has resisted, most famously in 2012, when...
Panoramic Camera (Fisheye / Multi-Imager) Guide on Aug 31, 2016
Panoramic cameras, including fisheyes and multi-imagers, have become increasingly widespread, with most manufacturers offering fisheyes and an...
Selling Super High Resolution Cameras on Jul 11, 2016
Is bigger better? In the past decade, the surveillance industry has moved from 0.3MP to 1MP to 2MP to 3MP to 5MP to 4K (8.3MP), etc. But there...

Most Recent Industry Reports

Avigilon Discontinuing Rialto Analytics Line on Apr 27, 2017
Avigilon is informing dealers/partners that the legacy VideoIQ Rialto products have been discontinued, recommending the newer ACC ES Analytics...
A Marketing Home Run For Knightscope - Man Attacks Robot on Apr 27, 2017
We criticize Knightscope regularly - their lack of revenue, their trying to fool mom 'n pop investors, their associating themselves with a clueless...
The World's First Fashion IP Camera From Amazon on Apr 27, 2017
Some analytics cameras can tell you if a person is jumping a fence, or loitering in a secure area, but none of them can tell you if the person...
Last Day - IP Networking Course May 2017 on Apr 26, 2017
Today is the last day to register for the May IP Networking Course. This is the only networking course designed specifically for video...
Hikvision EZVIZ Amazon Scam Revealed on Apr 26, 2017
Hikvision is violating US Federal Trade Commission guidelines and Amazon rules with a "Honest" Review Program scheme that provides gift cards to...
Anixter CEO Admits Price Deflation and Non-Exclusive Integrator Sales on Apr 26, 2017
Anixter's CEO has admitted to (1) price deflation impacting IP camera sales and (2) not always being 'exclusive' with security integrators. In...
Xandem Next Gen Intrusion Tested on Apr 26, 2017
Xandem's "full coverage motion tracking technology" is unlike any intrusion technology we have seen. We bought their new system and tested it...
Tri-Ed Favorability Results on Apr 25, 2017
Tri-Ed, owned by Anixter, far outranked Anixter, the lowest ranked company in our distributor favorability series. Still, Anixter's ownership did...
Eagle Eye Exec On Mountain Of Servers - VSaaS Growth Analysis on Apr 25, 2017
Eagle Eye VP of Operations, Hans Kahler, posted a picture of himself sitting on top of a shipment of new servers, as a testament to the companies...
Chinese 'Attacking Us From Every Direction', Says US FBI on Apr 25, 2017
"Chinese eating our lunch. Attacking us from every direction" said the US FBI's Deputy Director Andrew McCabe at the ASIS 2017 CSO Summit. .@FBI...

The world's leading video surveillance information source, IPVM provides the best reporting, testing and training for 10,000+ members globally. Dedicated to independent and objective information, we uniquely refuse any and all advertisements, sponsorship and consulting from manufacturers.

About | FAQ | Contact