I am not a pro photographer and don't like to spend a fortune in gear for my camera, but I've always wanted to buy an ultrawide lense...
I had the opportunity to buy the Tamron SP AF10-24mm for a decent price, and so far I am liking it... See a couple of pics I took a few days ago:
{% img center /img/DSC_2861.jpg 'Shibuya crossing'%}
{% img center /img/DSC_2618.jpg 'Zenko-ji Nagano'%}
{% img center /img/2016-03-21.jpg 'Matsumoto Castle'%}
Maybe not the best uw lense out there, but good enough for the price
\\psgonza