Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: Does anybody know how big of an area it will light up? Inches or feet?
Document: I waited for this to come back into stock, and it was well worth it. Its extremely concentrated, and focus can be changed by sliding the head to control its lens. The head is on a flexible neck of about 15 inches, thus it can be positioned at ANY angle.My wife uses it to do needle point while we watch a movie. Ok, not a big deal except when the movie is on our projected screen.
This is concentrated, with the head allowing for a very bright, adjustable, contained area from which the light doesn't bleed.
I used the focus on the lamp to control the area of light that hit the negative (via the copier paper as the diffuser). The results were good to very good.
An inexpensive, energy-saving and attractive solution to getting light just where I need it. I particularly like the ability to narrow or widen the the area that is lit.
Three feet isn't enough? It is for me. Even a newspaper gets a good coverage, unless you are within less than two feet of the light itself.POLE SEGMENT THREADING: Mine fit perfectly from top to bottom. I started at the bottom, pulling the wire out as I screwed in each segment. Went together easily and fit perfectly.OVERALL STABILITY: Mine is very stable and the threaded sections appear to stay together just fine.
My wife does a lot of knitting. She is really good at it, but she has trouble counting stitches and dropping stitches once in a while as she has trouble seeing with the lamps we have in the house. But no more! This DAYLIGHT task light is simply awesome. As they said, it can be focused to a 3 inch spotlight, or spread to a two or three foot wide area light, just by slipping the lens down or up on the adjustment cylinder.
I bought this lamp for tattoo lighting and it has worked very well. Has the ability to focus the led light in a specific area or can adjust to cover a wider area. Goose neck is a very nice feature that is convenient for multiple uses. Was simple to put together and had no problems. Lamp is a little expensive and that is the only reason for 4 star rating.
Great lamp for sewing, quilting, any kind of task work. Excellent light quality and can be focused to a small area (with greater intensity). Nice looking floor lamp. No problem putting together. Not a good choice for lighting a room like a typical lamp; this is for spot lighting. We are considering getting another one for the piano as it is not intrusive and can be pointed in any direction.
I have no way to measure the color temperature to see if it meets "daylight" standards, but it is very close to other daylight lamps I've used and is perfectly suited for reading compared to regular yellowish lamps.The LED lamp head solves a big problem for me.
This product is much less expensive than most LED reading lamps available at the time of this review ($120), many of which cost twice as much - I expect more competition as LED lighting becomes commonplace. But it's quite well built and fairly solid (note that the stand comes in sections that are screwed together, but if tightened properly is just fine). The combination of the gooseneck mounting and the ability to focus the beam to various sizes means that it should work for just about anybody.
Answer: yes