Dave, One way to "think" of fill flash is that it is supplemental highlights much like using a reflector or hair light or something. It is not the main light that you would meter for. So basically, it would help lighten shadows, put a sparkle in the eyes, etc. It is not meant to be a main light. If using the TTL metering in the camera, and lowering the flash compensation (several different ways), then the flash output is going to be lower than the sunlight and you are not going to get overexposure, just minor fill.
I struggled with the thought process at first myself. I have found that by practicing it and shooting over and over observing the behavior and effects that it makes much more sense now. Since you have a digital body, that is the easiest way to learn and observe. Pick a subject where you have shadows on the face and then start with no flash, -3, -2, -1, 0, 1, 2 compensation and you will see what I mean. For positive compensation it works better if you are not shooting manual mode as you would get overexposure - if in one of the auto modes (camera) then it would compensate for the higher flash output. -- Best regards, Bruce Monday, March 22, 2004, 4:26:11 PM, you wrote: bcin> Tom V suggested this when i shot my friends wedding last year. bcin> Set the shutter for less than the X sync speed(in this bcin> case SP was 125 so i shot in 60th bcin> and 30th)It bcin> allows for more ambient light in the picture and you bcin> lessen the black background,exposed bcin> subject bcin> problems. bcin> Worked very well.Only one missed TTL shot during the bcin> whole shoot.Mind you this was indoors bcin> in a hall. bcin> Its just this damn outdoor fill flash thing that i just bcin> cannot get my head wrapped around. bcin> To me shooting out doors in sun and having a flash go off bcin> would make it over exposed. I bcin> have read the bcin> manuals for the cameras and flash,but to me they are vauge bcin> Dave >> Dave, TV - what is "shutter drag" technique? bcin> Sounds interesting... >> >> tan. >> >> -----Original Message----- >> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] >> Sent: Tuesday, 23 March 2004 6:09 PM >> To: [EMAIL PROTECTED] >> Subject: Re:{3} Will adjusting the iso on the af280t give me fill flash >> >> >> >> Orrrr. >> Would using the Vivitar 285HV in 1/4 or 1/16 power mode(but use the 280T in >> the house for >> TTL flash >> with shutter drag taught to me by Mr.TVV<g>) be better for lighting up a >> shadowy face. >> Keeping in my mind that i will use Hyper Manual mode for these types of >> shots. >> Again PZ-1 and FA 28-105 PZ lens. >> Dave >> >>