Professor Newman looks at depth of field from the standpoint of what happens in front of the lens
What are the technological developments that have led to building and using wider and wider lenses?
With its 1in sensor, the Panasonic Lumix DMC-TZ100 is capable of matching full-frame – with limitations
How to manage exposure to maximise information rather than manipulate output brightness
The popularity of the light-emitting diode has led to a decline in flash tubes, but why is the LED so popular?
With stills cameras now the norm for filmmaking, why haven't cine lenses changed accordingly?
What factors determine the appearance of bokeh and how far will people go to achieve this effect?
Bob Newman explains why the JPEG format isn't perfect and why its proposed replacement is no better
Bob Newman looks at the factors affecting how a camera system renders an image of a distant object
The motors that drive a camera's autofocus system have changed dramatically since the first one in 1985
Bob Newman discusses how electronic shutters work and the operation of the most common shutter types
Bob Newman explains how the sophisticated autofocus system on the Nikon D500 stays on track, even when following erratically moving objects
What is a bridge camera, and should you buy one? Our complete guide to bridge cameras (aka superzooms or ultrazooms) has the answers.
The manufacturers may not like them, but a well-chosen hack can add functionality to your camera.
At first glance, one camera lens can appear to be faster than the other, but is this actually the case?
Canon and Nikon’s new, top-end cameras are, at first glance, quite similar, until you look below the surface
Nowadays, analogue is used to describe ‘old school’ silver halide photography, yet up close, it’s pure digital
Bob Newman explains why the camera JPEG can often be better than the raw file
Bob Newman revisits some raw files taken with a Canon EOS 5D and reveals tips for counteracting noise
In this article we look at the pentaprism, providing a guide to what it is for and how it works