I have a d3100 with kit lens but am wanting a wider angle for interior shots/real estate and outdoors. Tamron 10-24 was recommended at a camera shop but I also had my eye on the Rokinon 14mm as I have a tight budget. Both have good and bad reviews on amazon but the Rokinon is a little less, is prime and f1.8 which i understand makes higher quality photos. I'm not sure what to do but I want the best I can get as I would like to make professional looking photos as a possible side job or full time business. I wish I could afford Nikkor but $1500 is just too much.