I don't know if Rodney Dangerfield was into photography, but if he was he must have used f/3.5 lenses, judging by the way he was always bugging his eyes out. Which would be understandable, because any half-baked photographer knows that f/3.5 is a raging vortex where photons go to die, leaving your eyes straining for the faintest trace of light. Not to mention the utter impossibility of achieving anything remotely resembling shallow depth of field (DOF) with such an infinitesimal iris. No proper lens jockey would be caught dead with such a miserable excuse for a photographic tool. So if you have any remaining shred of photographic self-respect, let me save you the trouble now of reading any further ;-).
Suffers from a quarter-century and counting film and manual focus SLR addiction. Has recently expanded into 1980's AF point and shoots, and (gack!) '90s SLRs. He even mixes in some digital. Definitely a sick man.