It's nice to see Canon finally coming out with a pancake, but it's not a focal length that I would have hoped for. On APS, it's a bit long for normal, but a big short for portrait. And on full frame, well, a little wider than normal would be fine. But, a full frame camera is going to be big anyway, negating the benefit of a pancake lens. So, it may be a great lens, but certainly not my first choice of focal lengths.