I recently added to my lens collection. On a whim I purchased a Canon EF 40mm f/2.8 STM Pancake Lens from my favourite camera store Cameras Direct. I have sort of got it in my mind to do a bit of grungy urban and photo journalism style stuff with it. My first impression of the lens is positive. Although it is not an L series lens it has a good solid feel, is well constructed and most importantly has a metal mount. It is the first pancake lens in the Canon line-up, and is a real flyweight weighing only 130 grams (and a thickness of 2.29cm). With its slightly wide angle of view, reasonably fast f2.8 aperture and 30cm minumum focus distance I am hoping it proves to be a nice lightweight alternative to my regular walkabout lens (the EF 24-70mm f2.8L USM). The lens actually looks and feels good on my 5D Mark II, and the combined weight makes it a welcome change from lugging around the much more substantial zoom. Stay tuned for more thoughts as I put it through its paces.