Instruction: Answer the given question using the supporting document.

Input:
Question: how sharp is the picture?
Document: Amazing how clear and sharp the picture is on this tv. Even action and high speed moving scenes look like youare actually seeing them in person.
This TV is perfect -- amazing, sharp picture and easy to use remote controls. The quality is more than I expected. It is slim, lightweight and provides a beautiful sharp picture, even in bright light.
This TV has an incredibly sharp picture and lots of menu options to configure it just about anyway you like. If you also buy the wireless adapter to browse any streaming content from your home wifi, you will also find it that much more enjoyable.
Fantastic Design, ultra sharp picture, reasonable price, but for sound use an external sounds system.I also like the innovative usability options.Perfect picture, perfect Design -> I am very satisfied!
The set is everything as advertised. The picture is sharp and a joy to watch. It is also easy to operate, even for a person who started out using a crystal set. Amazon has done it again! and free shipping thrown in to make the purchase even more enjoyable. Bravo! !
I have only had the unit for a month, so only four stars, but set up was easy and there have been no issues. It is a little more expensive than some of the others this size but it was highly rated by an independent company and so far they were telling the truth. Nice bright and sharp picture and adequate stereo sound.
I purchased this HD TV for my 86 year old mother so that she could watch Golf and Football in more detail.Very easy to set up and program. Good, sharp picture and sound. Simple operation. She did not need a lot of bells and whistles that would only frustrate and confuse her. She has really enjoyed it.No negatives so far!
Product arrived damaged. Received replacement. This TV is basic with no frills. Exactly what I wanted and the price is exceptional. The picture is sharp. I have not experienced the faded corners on the screen that others have. I'm hooked to fios hd via hdmi cable. I recommend this TV for those who just like to watch programs instead of all the internet and other frills and you can't beat the price.
I am very pleased with the picture quality of this TV. The picture is crisp and very sharp. The TV gives a good picture even when there is light form two patio doors on each side of the set.Hooking up the set to various inputs and outputs was very easy.I am very pleased with this purchase and the seller did a great job as well. The set was delivered on time and well packaged.All around this was a good purchase.
Enjoy! (I'll review the PN51D550C1 shortly. )*****Original Review:DGiving it 4 stars ... Why? Because nothing is perfect and I'm sure I could complain about something if I thought long about it.Why 4 stars? The picture is awesome. Awesome compared to the top $$ plasma or 4 color LED, perfectly calibrated to -nth degree by really, really sharp guys? Probably not. But it is really good.
Answer: Picture quality is great. I would put it against any Sony / Sharp / Panasonic of a similar generation and technology and favor this one every time. I would also say that technology has not improved enough in 2014 such that this is significantly out-dated. Are pictures getting more vibrant and a bit clearer all the time? Yes. But unless you are watching a ton of things on a very modern Blu-ray player, you would be missing very very little by getting this TV. Cable companies are not able to produce a signal that maximizes the potential of current TVs.