Was steckt in einem Pixel?

17. June 2008

Was steckt in einem Pixel?

17. June 2008

Was steckt in einem Pixel?

John Galt, Senior Vice President bei Panavision Advanced Digital Imagine, und Larry Thope, National Marketing Executive der Canon Broadcast & Communication Division, erläutern in einer Präsentation auf Freshdv die grössten Missverständnisse in den digitalen Kamera Spezifikationen. (In sieben Teilen)

A short history of CCD/CMOS development, Sub-sampling and Super-sampling, HD lens and camera design strategies, Photosites – the tradeoff between resolution, dynamic range, and noise, Digital output signals from cameras, UHDTV, 2K and 4K cameras, and DCI Standards for 2K and 4K.


The Nyquist Theorem, linking optical and digital sampling, The implications of Fill factor and optical low pass filtering, The Nyquist boundaries of of motion pictures, and Limiting resolution.


Introduction to MTF, Introduction to an individual element’s contribution to final MTF, Transferring contrast, Cascading MTFs, Introduction to Otto Schade, Perceived picture sharpness and MTF, Edge Sharpness, image textures, and resolving power.


Pixels are not resolution, Practical measurements of MTF, Introduction to sinusoidal MTF charts, The Panavision sinusoidal MTF Chart, MTF benches for measuring lenses, Cascaded MTF of a DI, Sensor MTF response, Depth of Field, MTF measurements of real world lenses.


Line pairs per Millimeter, Differences between HDTV and SDTV lens standards, a demonstration of the MTF-Aliasing dilemma using three chip cameras, Loading the imager MTF into the digital container.


The resolution metric for a Bayer pattern sensor, Diagonal sampling Bayer pattern sensors, Optical lowpass filter options for single Bayer pattern sensors.


Spectral response, Camera color balance: Daylight v. Tungsten, Digital Intermediate MTF comparison between Genesis and 5218, Bayer vs. RGB striped sensors.