Thanks, but I knew the filter size. What I'm looking for is the outer diameter, since that will determine fit in a bag. I could make a pretty close guess from photos of the lens with the hood installed, but I'd prefer to know fairly precisely - say within about 5mm (metric) or a quarter inch (medieval).
Perhaps I should elaborate... Lowepro's lens pouch recommendations aren't always entirely accurate, or at least "best" fit. For example, they say a 200mm f/2.8 L USM II will fit in a "Lens Case 2", but really the hood is quite tight in that case. It works much better in a "Lens Case 3", which also has enough length to add teleconverters in the same bag. Conversely, the 135mm f/2 L will actually fit in a "Lens Case 1W", which is considerably shorter than a "Lens Case 2". Primarily that's what I'm interested in: will a Canon 70-200 f/4L IS fit comfortably in a Lowepro "Lens Case 2", a Canon 70-200 f/2.8 L IS fit comfortably in a Lowepro "Lens Case 3", is there enough height/depth to also fit a 1.4x TC, and then there's fit in my regular bags. Lens length, diameter, and weight are often-cited statistics, but lens hoods seem to be a forgotten component. Does anyone NOT use the hoods with these lenses?