|Look at the bokeh on that!|
On the subject of lens obsession we now come to 'breathing'. usually a good thing, except when it refers to a zoom lens which changes it's focal length as it focuses closer. I have such a lens, one that one obsessive says he wouldn't buy because when he pays for 200mm he expects 200mm at all focussing distances. Well I know this lens 'breathes' but only because I've read that it does. Does this 'defect' affect my ability to make pictures using it? Does it hell! I don't even notice the change in focal length and manage to work within the 'limitations' of my equipment. Just the same as I don't find the 24mm lens limiting in terms of sharpness or compositional possibilities.