What Is A 2k Camera

2K Security Cameras are non 2x1080P - Misleading Marketing Claims

0.89% more than is non "double the resolution"

Recently nosotros came across this absolutely terrible, mathematically-impossible, marketing claim.

What is 2K?

2K is half every bit wide as 4K - which is the new standard for Ultra Loftier Definition TVs, and, like 4K, it can refer to a few different resolution combinations that have a common theme.

Both 2K and 4K are using the Roman numeral K as shorthand for chiliad, which and then means that 2K refers to whatsoever number of resolutions that are approximately 2000 pixels wide and 4K refers to a bunch of resolutions that are approximately 4000 pixels wide.

1080P Idiot box is 1920 by 1080 pixels. So, a 2K TV could be 2000 x 1080--only 80 pixels in length more than than a 1080P Idiot box.

2K is certainly non double the size of 1080P! 1080P (1920 by 1080P) is even considered 2K by some people as it is approximately 2000 pixels wide.

Using its most strict definition of 2000 pixels exactly, 2K is only 0.89% wider than 1080p.

2K vs 4K vs 1080P - a Visual Representation

Here's a visual from CNET showing the area difference between a 1080P, 2K, and 4K screen:

It is absolutely obvious from this image that 2K is NOT twice the resolution of 1080P.

What is 4K?

4K is twice equally wide equally 1080P and twice as tall. This means that the surface area is four times equally big. In other words, if all the pixels were exactly the same size, yous tin can fit 4 1080P Tv set's in the space of a single 4K TV, as shown in this image.

Resolution vs Pixels

Most people refer to 4K TVs having iv times the resolution of a 1080P, but a more technically correct fashion of phrasing this would be that 4K has four times the number of pixels as 1080P. Our language hasn't defenseless up with technology and this is a colloquial style that nosotros talk about a idiot box'due south resolution.

The problem is the discussion "resolution" can mean "density of pixels in an expanse" or full pixels.

Consider the way that we talk most printers, for example. DPI (Dots per inch) is a measurement of pixel density, not the total number of pixels, and is the normal way of talking nigh printer quality. We often say that a 300 DPI printer is "twice" as skillful every bit a 600 DPI printer, just a 600 DPI printer has four times the pixels of a 300 DPI printer because DPI measures both the horizontal and vertical density.

Our language with TVs doesn't typically utilize DPI and instead people usually talk about total pixels. Talking about resolution this way is normal for televisions and cameras, but tin can be very confusing for people who are more used to printers. Therefore, information technology is a ameliorate practice to include the full pixels or full image quality when talking about, for instance, dome camera quality. This is why nosotros always display the total number of pixels and prototype dimensions on all our cameras models.

4K is 3840 10 2160 pixels or 8,294,400 total pixels.

An 8MP photographic camera records in 4K because "MP" stands for "mega" pixels. Mega is Latin for "one thousand thousand." So, an 8MP camera is recording viii million pixels, only like 4K.

How many megapixels is 1080P?

1080P is 1920 x 1080 or 2,073,600 total pixels.

If 8MP is 4x 1080P, what's double the resolution of 1080P?

4MP is 2560 x 1440 or 3,686,400 total pixels, which is close to 2x the size of 1080P*.

*editors note: despite having a iv 1000000 pixel sensor, 4MP cameras tape approximately iii.7 one thousand thousand pixels in order to fit correctly on a monitor. This is a strange quirk of how images are displayed on screens, simply it is industry standard.

Back to the original claim

What could this visitor do to brand this "double the resolution" merits true?

If they were selling 4MP cameras as double the number of pixels every bit 1080P, they would exist much closer to correct and within industry standards for communication. In that location's no manner that a 3MP photographic camera with 3 million pixels is two times the resolution of a 1080P photographic camera with 2 million pixels. That'southward nonsensical.

Here are some 4MP cameras that are true twice the resolution of 1080P

Looking for a complete 4MP system? In the menu at the height of this website, there'due south a link that says "systems" delineating them by the number of cameras. In each of those pages, in that location are 2 different 4MP systems. If you need a 4MP four-camera system, look for the "systems" link at the top of the page, click on "4 Camera Systems" and then scroll downwardly. Two of the three systems on that page will be in 4MP resolution.

Source: https://www.getscw.com/knowledge-base/2k-security-cameras-misleading-marketing-claims

Posted by: brownsheill.blogspot.com

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