2K v HD What is the difference?

[annos1]

I want to purchase a wireless doorbell camera but I cannot find an explanation as to what 2K is.  I assume HD is high definition.  What is the difference?

[jguerdat]

A quick Google answers that. Check this:

https://www.benq.com/en-me/knowledge-center/knowledge/what-is-resolution-of-monitor-full-hd-vs-2k-vs...

[StephenB]

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@annos1 wrote:

I want to purchase a wireless doorbell camera but I cannot find an explanation as to what 2K is.  I assume HD is high definition.  What is the difference?

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HD: 1920x1080 resolution

2K: 2560x1440 resolution

4K: 2840x2160 resolution

[annos1]

So, the resolution is different.  Is there any reason you might choose the lower resolution v. the higher resolution? They are both the same price.

[StephenB · Accepted solution]

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@annos1 wrote:

 Is there any reason you might choose the lower resolution v. the higher resolution?

Higher resolution will show more details.

On the other hand, if you play back the recordings from a PC browser, the 2K/4K videos won't play on a old PC (~2015 or older), so you'd need to download them and play them in VLC or a similar software player. 

[Edinburgh_lad1]

But the gen 1 doorbell is lower in price when on offer, and allows local storage. Also, gen 1 has a replaceable battery. Mine is showing as 1,536 as resolution, so not a huge problem in terms of comparing it to the gen 2 one. Here's a test of both: https://eftm.com/2023/10/review-arlo-essentials-2k-video-doorbell-2nd-generation-a-bump-up-in-qualit...