There is no set formula. A rule of thumb would be to start 1 stop down for shadow fill and 2 stops down for catchlights. The more soft and diffused your main light source, the less fill you need.
If you are using a camera that does not have exposure compensation, just don't use TTL mode on the flash. Set it to Auto mode and look at the f-stop on the camera and then set the auto f-stop on the flash to compensate. That is basically what I do with the 67 and leaf shutter lens. No ttl on that baby. Bruce Thursday, March 6, 2003, 11:19:14 AM, you wrote: g> On Thu, 6 Mar 2003, Bruce Dayton wrote: >> I'll try to help here. Full flash pictures tend to look a bit harsh. >> Shadows can look unnatural and colors/shading are affected. So the >> basic idea is to add enough "fill" light to reduce problem areas but >> not so much as to overpower the main light source (daylight). Standard >> TTL flash with no compensation tends to start to look unnatural. By >> lowering the output, you can remove shadows in the eyes, remove g> So, is there a generic formula to be used in getting a feel for just how g> far you dial down teh flash in fill? g> On a camera that lacks the convienent little dial to set this, how do you g> normally change this amount?

