Deciding on new lens, on a limited budget I need help!

[Marcel]

If you can live with manual focus, just get the Rokinon 85 1.4. You could probably get it in the US for about 299$. It's just superb, covers FX and is sharp at 1.4. If you must, you could sell the 18-105, but if it was me I wouldn't. Who knows when you will need the 18mm...

Good luck with your choice.

 

[kamaccord]

You may want to just visit a local camera shop and try a couple lenses. I tried a Sigma 17-50mm 2.8 while visiting a camera store and found it to be very sharp and fast. The lens also sells at a reasonable price on Amazon, Ebay, and Craigslist.

Sigma 17-50mm F2.8 Reivew - YouTube