I bought a Nikon D40 about a month ago. I`m using the 18-55mm kit lens. I`d used a point-and-shoot for a few months previously when I decided to move up to DSLR. So I`m basically a beginner, but doing as much reading as I can, and of course taking quite a few photos. Following Scott Kelby`s advice in the Digital Photography Book, I bought a sturdy tripod and a remote. Following the advice people have given on other threads here, I`ll tell you a bit about what I photograph and when. I live in a city of a million people in Japan. It`s not a beautiful place. There are a bunch of green hills and the like within the city, but every one of them is covered in electrical pylons, cable cars, radio and TV masts, roads, etc. The city used to have a lot of industry but much has evacuated to poorer countries. Still, industry and the urban landscape seems like a good theme to me. Getting close and actually having a clear shot of something is often difficult, since there are so many tall buildings everywhere. With my kit lens only extending to 55mm, I often have trouble keeping unwanted and distracting things out of my pictures. Assuming I have cash to spend, does this constitute a strong case for buying a longer zoom lens? If so, please give me some recommendations! I`m not looking to pay pro-lens prices but I do want good performance! ----- Because of my job, I often miss the daylight and end up shooting at night. Apart from factories, there`s a pretty extensive red light district. Seems like that area has potential, but I`m also keen to avoid unwanted attention. Another possibility is the groups of young people who hang out and practice their breakdancing. So there are some ideas for subjects. Any more from more experienced photographers would be great. Can anyone offer some tips on keeping my nighttime (and more general urban/industrial) photography interesting and varied? Making it genuinely engaging? Getting greens and light blues in my pictures?