One of the shortcomings of smaller image sensors is obtaining adequate exposure in dim lighting situations. Anyone used to sub full-frame cameras or just dull kit lenses has felt this pain. To gain appropriate exposure you’ll either have to bump up the ISO, shoot with the lens wide open, add physical light sources to the scene, or just get use a camera with a bigger sensor/better ISO performance.
I decided to just find a brighter lens. Traditionally, bright lenses (f1.4 or less) have a commanding price structure, and fall out of reach of a good portion of the entry level camera audience. A good qualify manual-only f1.4 lens can cost around $120, and for autofocus, north of $400 USD. If you want to dig a bit further and go into the sub f1.2 territory, prices can pick up quickly and approach $600-1000. However, there exists a small subset of lenses that are ~f1.0 or less that are semi affordable.
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