As I said 50mm is small devil for portfolio and portrait photography and its not bulky in u r bag like other lenses. its good for run and gun shooting which capture every thing in frame. The first model of 50mm was quite hactic to focus becoz of its inbuild quality as it was made of plastic material. But the new nifty fifty is very good in inbuild quality as compare to its early model. The new 50mm is made of metal mount so becoz of its metal mount its simple to focus and user frindly. it wont make sound while focusing as the before model use to have. Canon had made many changes in the new nifty fifty lens. So dont wait and think just go ahead and perchase it. even I have it in my bag new metal mount 50mm lens and the cost is also very less as compare to other costly lenses which really effect your poket. So go ahead and buy it. And it suit for both APSC and Full Frame Camera also.