For those of you who have an Ipad.... Canon Singapore has put out a very interesting (and free) app called CanonSGLens, you can searh for it on the apple store...
It gives lens specs, drawings, MTF charts, allows comparisons, has a FOV simulator, depth of field simulator and calculator, etc etc....
It gives lens specs, drawings, MTF charts, allows comparisons, has a FOV simulator, depth of field simulator and calculator, etc etc....