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A few attempts to clarify some mysteries about flash and digital photography basics, hopefully helpful.
3. Soft Light
How Light Meters Work (maybe not as assumed)
A Histogram is Not a Light Meter Incident meters vs. Reflected meters
There are TWO types of Histograms A common type does not show real data or clipping
Histograms are Gamma Encoded The numbers are probably not what you think
Nikon TTL BL with D Lens Distance Not always correct
Pixels, Printers, Video - What's With That? (The Most Fundamental Basic Digital Concepts)
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...)
Comparisons of Optical Slave Triggers (for the SB-600 too)