By: Nick Rains

We live in ‘interesting times’. Not since colour film was introduced has so much controversy raged about photography. The Internet has allowed vast global discussions to ebb and flow like never before and whilst this is great in some respects, the downside is that there is a whole lot of misinformation floating around.

Problem:How to sift the simple facts and truths from the myths and rumours?

Answer:With a basic knowledge of certain aspects of photography, especially basic lens theory.

Rainbow LorikeetCanon D60 with Canon 300/2.8L IS lens and 2x Extender (960mm Equivalent Focal Length).The ‘Focal Length Multiplier’ is one of the most easily misunderstood characteristics of the some of the new breeds of DSLR and so I would like to offer a brief look at this aspect of digital imaging and attempt to lay to rest some of the myths.

I own a Canon D60 and, like many other photographers, I was initially concerned about the ‘Focal L...