"What kind of lens is that?" is a question I here often lately. The lens that other photographers and casual observers are referring to is the Canon 40mm 2.8 Pancake.
Canon has taken the simple and tested optics of mirrorless and rangefinder cameras and adapted it to the SLR line. It’s small, lightweight and cute. Aside from that it is a flat out beautiful lens, sharp, light and only $199.00. $149.00 at B&H til 6/1/13
The 40mm on the X makes it look even smaller.
For street shooting or travel, it is an unassuming partner. On a 7D or 5D3 it is a pleasure to carry compared to a 24-70mm 2.8. While it looks like a toy, the performance is solid, shot wide open at 2.8 shows a beautiful falloff around the edges, tack sharp focus and nice bocah. (sp? boca, bo-Cuh, lol)
5D3, iso 320, 40mm 2.8 at 2.8 1/160
Oh yeah, the fried oyster (see above). If you are in Savannah, check out The Olde Pink House restaurant. The fried oysters are coated in corn meal, lightly fried and only $2. You can’t beat that or the pancake.