If you ask people for recommendations for a lens upgrade from a kit lens, the usual response is “Get a 50mm lens! It’s fantastic!”. They mean well, but they are probably wrong. Here’s why you don’t need a 50mm lens (probably).
The 50mm lens is probably the most talked about lens, and yet, the least understood in my opinion.
In order to understand this situation some history and math are needed. Back in the film days, the 50mm lens was known as a Standard lens, mostly because that was the default lens sold with any SLR camera before kit zoom lenses became popular.
However, the 50mm lens is also known as a Normal lens. For a cool description of the Normal concept and a good stretch of your arms, you can try a previous post about the 50mm lens.
In general terms, the 50mm was the natural recommendation in the film days because, on one hand it has the viewing angle of the human eye and, on the other, it is a mathematical normal lens when used on a 35mm film camera. If you could mount the same 50mm lens on a medium format camera, it would have a wider viewing angle than the human eye. Or, if you mount a 50mm lens on an APS-C sensor based camera, it would have a narrower viewing angle… Either way, it may not be what you’re looking for.
You need a Normal lens
Most people who recommend a 50mm lens as an upgrade from a kit lens really mean to say, they recommend you to use a normal, fixed focal length lens. Why? It’s pretty simple:
- Since a normal lens has a “human” viewing angle, it helps you produce images that more closely resemble reality
- Being a fixed focal length, it is sharper than a zoom and it has a wider maximum aperture (it is a “faster” lens)
- Normal lenses are usually the smallest, lightest and least expensive for a given system, with a few exceptions.
So, which lens are you really looking for?
It depends on the system you use. In that regard, I have quite a few recommendations for the major systems, listed below.
APS-C: RF 35mm f/1.8 IS Macro STM (Adorama, Amazon)
Besides being a Normal lens it is stabilized and is a Macro, which lets you focus objects as close as 13 cm (5”). It even has a built-in light to illuminate objects at such close distances!
*Please notice these lenses can be mounted on any Micro 4/3-system camera body.
As you can see, you may not need a 50mm lens. You probably need a Normal, Fixed Length lens.
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