How Big a TV Do You Really Need?

You're sitting too close to the TV, mom used to say. Well, in the world of high-def, there is no such thing as too close to your TV. In fact, the closer you sit, the better you can make out high-definition images. Obviously, right?

With four major resolutions now available in televisions (not counting interlaced and progressive-scan varieties), it can be incredibly confusing trying to figure out how big a TV you actually need. After all, there's no point buying an ultra-high-resolution TV if you won't be able to discern any increase in quality.

Good news: Here's a handy chart that lets you determine the optimal resolution for your TV based on how far you sit from the sit, and how big the screen is (or would be). Take a look at the graphic to get started. If you're confused, here's how to interpret it.

Start by figuring out your typical seating distance from the TV. You'll want to be as accurate as possible. A foot can make a big difference. This is your viewing distance, noted on the vertical axis. Now just follow along the horizontal axis to find the screen size of your TV, or the TV(s) you're considering purchasing. Find where these two variables meet and you'll land in a colored range. Use the legend to determine the resolution of a TV at that combination of size and distance that you'll be able to make out.

You might be surprised: If you sit a normal distance from your TV, (say, 10 to 15 feet) you'll need a fairly large set before even basic HDTV quality starts to become noticeable. At 15 feet away, you need a 45-inch set to see any of the benefit of 720p and nearly an 80-inch set for 1080p to make a difference. I don't know about you, but an 80-inch plasma isn't currently in my budget.

Give the chart a spin: It's definitely something to check out if you're in the market for a new TV, before you get too far in the purchasing process. The full story, with additional information, is located here.

Also worth reading:
Determining the Right HDTV Fit for Your Needs
Finding Out Who's Sending HDTV Signals
Ultra-Cheap Flat Panel TVs... But Are They Any Good?