i bought my camera nearly 2 years ago as a body only as it came half price in a closing down sale. It gave me the opportunity to add new lenses as and when. So far I have a nifty fifty plus a 10-18 mm wide angle lens. I took both lenses on a trip to India last year and they were ok for what I wanted to do at the time (I.e close up and middle distance). We are going back again to a different part of India and have the opportunity to take photos of the Himalayas. We have been told that, on a good day, we might just catch sight of Everest. We will be in the tea plantations and Sikkim so I want to make sure I cover all bases when it comes to lenses. I am looking at a telephoto (55 -250 or 70-300 or thereabouts perhaps) and have seen so many that I have confused myself. Do I stick to Canon or will a Sigma or Tamrin do just as good a job? I don’t have a great deal of money to spend (up to about £150) so do I get a cheaper new one or go for a pre-owned one. So far, I have not really gone off auto as I find it very easy to use and get great pictures. Can anyone advise me on best options?