Ppf (136)

Displaying 'PPF' tags 126 - 136 of 136 in total

4 Key Considerations for Camera Layouts

Even once you know what you to monitor - the front door, the safe, the parking lot, etc. - how to layout cameras can be tricky. In this note, we explain the 4 fundamental considerations for camera layouts: Field of View Width Pixel Density Ca...

By John Honovich - over 7 years ago

PPF vs Lighting Variances

A major flaw in using Pixels Per Foot (PPF) to specify surveillance cameras is how easily the metric is undermined. Theoretically, you should specify a PPF number, say 50, and know that you will be able to capture facial details regardless of the ...

By John Honovich - over 7 years ago

How Far Can a PTZ See?

Knowing how far a PTZ can see is a critical but tricky question for PTZ use. On the one hand, seeing very far away is a common reason for choosing PTZs. On the other hand, we regularly hear people radically overestimate how far one can see with a ...

By John Honovich - over 7 years ago

Armored Car Robbery Video Examined

Continuing our analysis of real-world surveillance video, in this update, we look at video released [link no longer available] after a the attempted robbery of an armored truck driver as he serviced an ATM. Very little footage of the robber was sh...

By Ethan Ace - about 8 years ago

Problems with CCTV Footage of LA Arsonist

Here's an interesting example of problems with real world surveillance footage. Recently, Los Angeles was hit by an arsonist who lit dozens of cars on fire around the city. Needless to say, this created a panic around the area as people feared the...

By John Honovich - about 8 years ago

Pentax Plus Megapixel Lens Test

Last month, we released the first ever Megapixel lens test where we did a shootout between 5 leading surveillance lens manufacturers - Computar, Evetar, Fujinon, Tamron and Tuss. Member feedback was very encouraging and the lessons learned in imag...

By John Honovich - over 8 years ago

SD vs. HD PTZ Shootout

PTZs, like fixed cameras, are moving to megapixel. With PTZs, though, real questions remain about the value of going to megapixel. Some people say that megapixel eliminates the need for PTZ, regardless of the PTZ's resolution. Our Fixed MP vs SD ...

By Benros Emata - over 8 years ago

Video Surveillance RFPs Reviewed - Vol 1

In this report, we review 4 recent real-world video surveillance Request for Proposals (RFPs). RFPs provide a good look into the needs, challenges and desires of actual security end users. In our first volume, we review: A Transit Center A Police ...

By John Honovich - over 9 years ago

City Housing Authority RFP Examined

In this note, we examine a current video surveillance RFP for a housing authority covering more than a dozen sites. The RFP is specified in extreme details and, in may cases, too detailed or contradictory. For background, review the 154 page Housi...

By John Honovich - over 9 years ago

PPF Test - Getting High Quality Surveillance Video

Megapixel cameras foster hope for much higher quality surveillance video but how much more and in what conditions? In this report, we answer these questions in depth based on extensive testing. The most aggressive marketing claims suggest a singl...

By John Honovich - almost 10 years ago

Camera Design Tool with Google Maps Integration

The new IPVM Google Maps Camera Calculator empowers surveillance professionals to plan and design systems like never before. Whatever project you are working on, enter the address and start mapping out cameras. This video overviews what the calcu...

By John Honovich - almost 10 years ago

Displaying 'PPF' tags 126 - 136 of 136 in total