How to set a TV up by eye

Sometimes you don't have access to a set-up disc, so you may want to do a rough set-up using the tools in your head. This guide should help you get a TV watchable.

The image on the left is correct. The image on the right is a simulation of what the same image would look like with the contrast control set too high. Notice how the clouds lack detail and are merely white blobs.
(Credit: Geoffrey Morrison/CNET)

Let's say you're at your father-in-law's house and he just got a new TV. You're stuck in a corner, having recommended the TV, and you're the only person who knows contrast from composite. What to do?

In an ideal world, you'd have a set-up disc on hand to set it up for him. Better yet, you'd have the number of a local calibrator instantly available and pop-in-law would be willing to spring for a full calibration.

But that's not always possible. Here are a few tips that will help you get the picture settings on his TV close to ideal — or at least closer than it was.

Picture mode

The first place to start with your TV calibration challenge is to select a picture mode you think the TV owner will like. Sure, Movie or Cinema modes are the most accurate, but has this person ever seen an accurate TV? If not, he's probably not going to like the accurate colour temperature and colours of those modes. It might be worth a few minutes to extol the virtues of accurate colours and colour temperature, but know it will likely be an uphill battle. Personal preference at this point, then.

With any of the tricks below, it is best to check them on multiple pieces of content as there is no way to be sure that any one clip is actually correct. For example, a show like Grey's Anatomy has a softly lit look to it that isn't typical. Many reality shows, on the other hand, have hyper-exaggerated colours that may lead to setting the Colour control too low. Each CSI show has a decided colour shift, and shouldn't be used, either.

Contrast

To set contrast, you'll need something with a lot of bright areas of the image. Sport can work pretty well for this — something with shots of the sky — or skiing (depending on season, clearly). What you're aiming for is a bright image, but still with highlight detail. In other words, the bright areas of the image still have detail and aren't just awash in white. Turn the contrast control up until you start losing detail. Clouds will cease being clouds, snow will just be glare. Now turn the control back down till you see detail again. Somewhere in this range will be ideal. Check out the clouds in the image on the right at the top of this article. This is what bad looks like.

Brightness

To set brightness, you're looking for the opposite of contrast. Dark movies like Aliens or The Dark Knight are perfect for this. Turn the Brightness control down until everything disappears into blackness (or something close). It should be readily apparent what this control does.

The image on the top is correct. The image on the bottom is a simulation of what the same image would look like with the brightness control set too low. Notice how all the detail in the stones is gone. Admittedly, though this may make the photo a bit cooler, it isn't how you want your TV set-up.
(Credit: Geoffrey Morrison/CNET)

Turn it back up so you can see detail in everything, but the image doesn't look washed out. Another test for this is a darker scene with someone who has long hair. The underside of their hair (I don't know what you people with hair call it) away from the light can be a good place to spot shadow detail. Also, dark coats at night. The TV show Castle does this sometimes, with dark jackets at night at a crime scene.

Have no doubt, this is the hardest control to eyeball. It's rarely going to look absolutely correct, and worse, it may look OK on some content and not on others. You'll spend more time getting this setting right than all the others combined.

Colour

Generally, the colour control will be reasonably close to correct out of the box, especially in Cinema/Movie mode (if you've gone that route). With most TVs I review, I rarely move this control much, but I'm using the most accurate picture mode, so YMMV.

Tint

Leave the tint control where it is. It is likely correct, and without test patterns, you can't really set it.

Sharpness

The sharpness control is going to lead to a debate. The accurate setting for this is going to be at or near the bottom of its range. This will result in a softer-looking image that actually has more fine detail.

The image on the top is correct. The image on the bottom is a simulation of what the same image would look like with the sharpness control set too high. Notice the hyper-defined edges, and the white outline to the arch. This is edge enhancement and is masking fine detail (not that you can tell from this 610-pixel-wide image, but trust me).
(Credit: Geoffrey Morrison/CNET)

Set it low, but not so low as you lose detail, and see how the TV's owner likes it. Tell him what you did, though, and that after a day or so, he'll like it way more than if the sharpness control was set higher. I use fine details like wrinkles or hair for this. Check out the image above for what edge enhancement looks like.

Backlight

If the TV is an LCD, it should have a backlight control. The best thing you can do here is show the owner where the control is, and leave it at around 80 per cent. This will be plenty bright for most viewing, but tell them that they can increase it if they need to, or turn it down further for better black levels and lower energy consumption.

Colour temperature

As mentioned above, colour temperature is a difficult one. Yes, the Warm mode is likely the most accurate, but if someone isn't used to an accurate picture, it's going to look really red. If available, try a middle mode (Normal, Standard). Or just let them set it. Check out my article on colour temp and why it matters for more info.

That should do it, or at least, as close as you can get it. Recommend a set-up disc, bow, then run like hell.

Don't just assume that you can give a gift of calibration, though, as some people don't take too kindly to it.

Lastly, make sure they have their HD equipment hooked up with HDMI cables. If not, this could be an easy way to vastly improve their image. It shouldn't cost more than $20 or so for all the HDMI cables you need. Check out my article on why cheap HDMI cables are perfect.

Via CNET.com



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