I've got a D5000 with the 18-55mm kit lens and the 70-300mm FX lens for telephoto work. I'm investing in the 35mm f1.8 prime for low light but I'm a bit stuck about what to do for Macro. I don't really want to end up duplicating a focal length I've already got unless it's really worth it. Ideally, if I did get a macro lens, I'd like to be able to use it for portrait work too, but my 70-300mm does a good enough job there. Perhaps extension tubes or reversing rings are a better option instead? If I went for these, what kinds of reproduction ratios could I be looking at with my current lenses?
I'm also wondering whether I could sell the 18-55mm and use the (relatively small amount of) money to help pay for whatever I get next, using the new 35mm as my main walk around lens. But will I miss the 18mm end of the kit lens and larger gap I'll have between 35mm and 70mm?
I was thinking that investing in a 10-24mm wide angle zoom a few years down the line might compliment the 35mm quite nicely.
I think I'm fairly committed to the DX system and will want to upgrade my body to a D7000 or better in a few years too, keeping the D5000 as a second body. Anyone got any suggestions for the best combination of lenses to work towards? I've been agonising over this for days!