Shopping for lighting used to be pretty easy. For most bulbs, you only needed to know the physical shape and the wattage. For something more exotic, you could bring your old bulb to the store and match it with something on the shelf.
It’s very easy to purchase the wrong bulb — and end up dissatisfied.
Today, light bulb shopping is a convoluted mess. The wattage is no longer tied to how bright the bulb is. There are a bunch of new terms, like Kelvin, CRI, and lumens. It’s very easy to purchase the wrong bulb — and end up dissatisfied.