
One of the big things the past couple of months in photgraphy seems to have been primes. The Nikon 50mm 1.4G has been an exceptionally hot little item. And, it’s not just Nikon lenses with renewed prime interest, if you follow the various forums. There’s quite a lot of clamor about for more primes. We have to admit, the resurrection of interest in primes caught us a bit by surprise.
For those just joining us already in progress in the digital age, primes were the de facto norm for film for a large chunk of photographic history. A single focal length historically made it easier to formulate a sharp optic, a feat more difficult in zooms because you have to try to optimize a wide range of focal lengths, which often adds weight and size and makes the lens slower.
In the modern age, decades of experience formulating primes, in addition to their simpler and smaller optic constructions, typically leads to primes being among the cheaper offerings a manufacturer has. (The EF 50mm f/1.8 I, for example, is one of–if not the cheapest–Canon lenses, weighing in at under 100 bucks.) Also, primes are usually faster, typically being f1.4 or f.18, much faster than standard kit lenses which are usually f3.5 or slower.
So, for cost and aperture speed, primes are still hard to beat. But, if you want more flexibility than a single focal length can offer, don’t fret. Despite the common insistence that primes are the best optically, computer assisted design has lead to a generation of quality zooms that perform to the level of primes of old at many, and sometimes most or even all, focal lengths. Olympus is famous for the consistent performance of it’s mid and high grade zooms, the new f2.8 constant aperture zooms from Nikon also offer equal performance. And, of course, Canon prides itself on the performance of it’s L-series senses, and if you buy Sony Alpha DSLRS you’ll find a collection Carl Zeiss zooms which also lack any concerns in their optical performances.