Camera Lenses Part 3: MTF And Depth Of Field June 23^rd 2022 - 09:00 AM

All lenses suffer from various imperfections that reduce sharpness. However, even if the lens elements were ideal and caused no loss of resolution, lenses still can’t focus to a perfect point.

Orbital Virtual Productions - New Large Scale Virtual Production Stages In Downtown LA. June 21^st 2022 - 09:00 AM

Nobody’s risking much, in 2022, by assuming we’re living through the genesis of virtual production. There are enough high-profile productions happening to lend the technique some legitimacy, and while the surge in both interest and the provision of facilities makes it hard to say how demand and supply are mat…

The State Of Film June 17^th 2022 - 09:00 AM

On one hand, film might seem dead. On the other, the last few months have seen a flurry of activity which is emblematic of a wider interest in the field that’s continued ever since the technology fell out of mainstream use. It’s been suggested that photochemical origination is set…

HDR: Part 3 - Grading June 16^th 2022 - 09:30 AM

Almost since photography has existed, people have pursued ways of modifying the picture after it’s been shot. The “dodge” and “burn” tools in Photoshop are widely understood as ways to make things brighter or darker, but it’s probably less widely understood that they refer to techniques for exposure control tha…

Look Like A Million For Less June 13^th 2022 - 09:30 AM

Every TV viewer compares live content with what they regularly see on TV, with multimillion-dollar talent with more multimillions in technical equipment and support.

Camera Lenses Part 2: Types Of Optical Distortion June 9^th 2022 - 09:50 AM

High quality lens design is a scientific art. In Part two of this four-part series, John Watkinson explains some of the issues involved in optics and camera lenses.

Information: Part 3 - Applying Statistics June 6^th 2022 - 09:00 AM

We are not done with statistics yet. In a sense we will never be done with it and it is better to know how to deal with it than to ignore it. It is better still to know how others commonly fail to deal with it and reach conclusions that…

Transforms: Part 5 - OFDM June 3^rd 2022 - 09:00 AM

Thus far we have looked at transforms from a somewhat abstract viewpoint. In contrast, here we look at an application where transforms take center stage.

HDR: Part 2 - Brightness Encoding May 27^th 2022 - 01:00 PM

Dealing with brightness in camera systems sounds simple. Increase the light going into the lens; increase the signal level coming out of the camera, and in turn increase the amount of light coming out of the display. In reality, it’s always been more complicated than that. Camera, display and p…

Electricity: Part 3 - AC Systems May 27^th 2022 - 09:00 AM

Here we look at alternating current (AC) systems and how generating AC often requires an intermediate step of converting to DC to improve the efficiencies of AC generators.