Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: What is the best all-in-one lens? I will be spending four months in Europe studying and taking vacations.  I have never been to Europe before, so I want to make sure my pictures are amazing and something I can treasure forever.  I plan to buy a Canon Rebel T3i camera and just wondering what the best all-in-one lens would be for a decent price.  I would like to be able to use it for architecture/landscape as well as shots of people.  Any advice would be greatly appreciated!
Document: Fist off I am just a take a picture or two at family functions or vacations. I have had this lens for four months now and by no means am I a professional photographer. But when my nephew asked me if I would take his wedding pictures I thought that I should at least invest in a better lens than my Canon Rebel XTi camera came with (EFS 18-55mm). Wow this lens that I purchased gives you a whole new perspective on how pictures can really look with a different lens.
Great lens! Got some awesome shots of my kids on the field that I wouldn't have gotten otherwise. This is a great lens. Knowing I would want to do video, I made sure I got the EF-S 18-135is with the T4i body when I bought the camera. The 2 lenses make a killer duo! I have no regrets and would recommend this set up to anyone and everyone.My one regret? No taking the plunge sooner!
I bought this lens originally thinking I would use it with my Canon Rebel ti 35mm film camera. Alas I did not do enough research, this does not work with the EF mount...but it does work well with the Canon Rebel T3i I purchased recently that has an EF-S EF combo mount. I have been able to shoot from a good distance during the day and night without issues of blurring or shake.
Otherwise, forget it. If you want a telephoto like the pro sports guys use to capture Monday football, get one - you can find something real nice for about $7,500. But for the everyday user, even pros or pro wanna-bees, this is a great product.BTW - a lot of people are surprised to learn that a telephoto can be used for - yes - portrait photography. Don't believe all the stuff they tell you about 50mm lenses being the best for that task.
this was a big step buying something like this from amazon ive never spent this much money from a website but i was curious and it has paid off so far i bought a canon eos rebel t4i recently and i wanted this lens but didnt want to pay 299 i thank this seller and would purchase from him again..
I bought two more lenses the Canon EF mm50 1.4 and for some reason the competing EF mm50 1.8.So for the last few months I have been taking many pictures with all four lenses in series starting with wide aperture and incrementally closing, which of course changes shutter speed and depth of field. Then I would use the shutter priority setting and play around with the white balance and the ISO setting.
I have been using the kit lens(18-55mm) for about 6 months now with my Canon T3i.I am so glad I made a decision to buy this lens(55-250mm) to accommedated my kit lens(18-55mm),(which is a piece of crap).The images taking with this lens(55-250mm) is amazing sharp and more color pop! was very surprising to me. If you have a Canon, get this lens and you will not be disappointed.
This lens came with the canon t2i i bought. It was either buy the camera without 2 lenses or spend $50 extra and get the camera with this lens and a 18-55. I'm not sure what this lens cost by itself but hopefully it isn't over 150.00 It takes decent photos and i'm glad i have it but i am wishing i would have forked over a few hundred and gotten the 18-200 instead. Just not as consistent  as i would like.
We purchased this lens to take on our honeymoon to Tanzania. We had a few options but chose this one because it would work best with our Rebel camera. We thought that the 55-250 lens was perfect for catching great shots of the wildlife while out on Safari. The IS option was what was great to prevent shaky pictures. We are new to the world of digital SLR cameras but this lens was easy to use, change and learn about. Definitely comes highly recommended by us.
No wonder it feels like a toy to some. Real glass lenses make your camera front heavy.At its widest, the view is the closest zoom of the lens that came with the Rebel if you bought it as a set. If you want a more versatile lens, get an 18-200mm lens. Get the 18-200mm so you do not have to keep switching lens from wide to zoom and from indoor to landscape.It is a lot of fun to have a long zoom.
Answer: My 24-105mm F4.0 IS L stays on my camera when traveling abroad.  It's heavy, but it does take fantastic pictures.  Check into the Crumpler straps.  I own this strap (http://www.amazon.com/Crumpler-The-Industry-Disgrace-Brown/dp/B001JQ4QCW/ref=sr_1_10?ie=UTF8&qid;=1321633955&sr;=8-10) and it lets me carry my 70-200mm F2.8 IS L around all day without fatigue.