Karl, I'm afraid you've got the whole thing a nit garbled. It's the gradation steps that become smaller. Not the total luminance levels.
One bit records from pitch black to gleaming white. The same with 2 bit. But the difference is the number of grey tones in between.
Herschel
Herschel Mair
Head of the Department of Photography,
Head of the Department of Photography,
Higher College of Technology
Muscat
Sultanate of Oman
Muscat
Sultanate of Oman
Adobe Certified instructor
+ (986) 99899 673
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