Category archives: Tutorial

Whenever asked about Auto ISO I have always dismissed it out of hand. My stock response has invariably been “I never use it”, but more recently I have noticed that many photographers do, often as a default setting.  This seems especially true of documentary and ‘street’ photographers and I have been wondering why.  This has […]

A few years back I read  (I cannot recall where)  that one of the most effective ways to get more speed out of your computer was to learn to type.  Sound advice which in spite of my best intentions I have yet to follow with any real resolve and my typing speed remains fairly unimpressive […]

3D imaging has made a bit of a splash in recent years through high definition cinema such as the IMAX system and through the development of 3D TV. It may surprise you to learn that this is by no means a new phenomena and whilst recent technological innovations have improved the convenience and quality of […]

Although as discussed in part 1 there are a number of different ways of generating a 3D simulation, they all require the same source image material. Consequently we can shoot for 3D in the same way regardless of our chosen realisation method. Essentially we need two images, one to to represent the viewpoint of the […]

The concept behind a stereograph is not complex, it is simply a matter of creating two images to represent left and right eye viewpoints (as described in part 2), placing them adjacent to one another and then viewing them up close, preferably with a dedicated viewing device, so that each eye sees only one image; […]

Whilst the principle behind the anaglyph is perhaps more complex and challenging than that of the stereograph, the procedure required to make one is much quicker and surprisingly simple. Before we get to that stage however, we need to obtain some special 3D anaglyph glasses, or better still, make some.

The third technique involves the creation of a looping gif animation which is in effect oscillating between the two images (left and right) rapidly. This will give an impression of looking into a 3D space, although arguably it is not as pronounced as the previous methods.

There is a commonly held misconception concerning image resolution that I frequently encounter. By way of example, for a recently advertised student photographic competition, entrants were requested to submit files at no less than ‘300 dpi’. This is a fallacy and suggests to me a certain lack of understanding of resolution on the part of the […]