Notes by Dr. Optoglass: Noise and Dithering

Topics Covered: What is Noise? Signal to Noise Ratio Dithering Color Banding I think television has betrayed the meaning of democratic speech, adding visual chaos to the confusion of voices. What role does silence have in all this noise? – Federico Fellini Noise is unwanted information in a signal. A fly in your soup is […]

Notes by Dr. Optoglass: Angle of View and Aspect Ratio

Topics Covered: The Angle of View of the Eye The Sensor Size of the Eye The Aspect Ratio of the Eye The Crop Factor (35mm equivalent) of the Eye The eye of the master will do more work than both his hands – Benjamin Franklin Put together, the horizontal angle of view of both eyes […]

ETTR – Expose to the Right

To improve signal to noise ratio (S/N), many professionals advocate ETTR (Expose to the right) when faced with low contrast scenes. The Luminous Landscape has two great articles by Michael Reichmann explaining this here and here. You might want to read them first before going on. I decided to test this to see for myself […]