Hi Tim, Your bw shooting approach may be the best for your needs. Upgrading from a 1.8 lens to 1.4 is probably a large investment forthe small change it provides. You only pick up about 2/3 stop of light gathering, going from f1.8 to f1.4. Why not just bump upyour camera to ISO 800 and get anotherFULL stopof light gathering without investing another dime. ISO 1600 may not be out of the question, giving you two stops.Probably not enough additional noise in your captures to be objectionable, depending on your camera, at least at ISO 800. You didnt note in your commentwhether youre shooting film or digital. If you shoot film, and dont process ityourself, make sure your lab can push the one or two stops when they process it for you, or find one that can. Good luck, and good shooting! Jeff In a message dated 8/31/2010 10:48:08 P.M. Central Daylight Time,