The most versatile lens, the 0-10x is a variable focus lens that can be used as a webcam, still or video camera lens, or manually adjusted to 10x magnification. Perfect for text, dissection, entomology, gems, crime scene investigation, circuit board inspection, assembly inspection and much more. 12 white LEDs give great illumination at short distances. You may also turn the LEDs off and use your own light source if desired.