| ▲ | lytfyre 2 hours ago | |
there are lenses out there designed for apochromatic performance across the UV-Vis-IR band, but they tend to be really pricey. The Coastal Optical 60mm is a frequently cited one. UV in particular is challenging, because glass that works well in the visible light range can be quite poorly translucent in UV. Quartz is better, but drives up the cost a lot, and comes with other tradeoffs. | ||