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A few attempts to clarify some mysteries about flash and digital photography basics, hopefully helpful.
3. Soft Light
4. Flash pictures are Double Exposures (including Fill Flash in Sunlight)
How Light Meters Work (maybe not as assumed)
Details about Metering Principles (including TTL)
A Histogram is Not a Light Meter Incident meters vs. Reflected meters
There are TWO types of Histograms The Common Histogram is Poor
Histograms are Gamma Encoded The numbers are probably not what you think
Nikon TTL BL with D Lens Distance Zoom lens distance accuracy is rather suspect
Comparisons of Optical Slave Triggers (for the SB-600 too)
F/stops, in tenth-stops f/stop, shutter speed, ISO, in third and half stops (EV too)
Photo Editor Curve Tool (and levels and contrast and brightness and inversion...)
Main Scanning Menu - Scantips.com