A pinhole is not, technically, a lens but is a clear, round hole in a thin piece of material, usually metal
A pinhole sieve is a field of pinholes with the center pinhole being the largest and increasingly smaller pinholes radiating away from the center
A zone plate is a series of clear circular rings surrounding a center hole with each of the clear zones equaling the area of the pinhole in the center resulting in increasingly thinner zones as you move away from the center of the zone plate
Anti-reflective glass
وصف
عدسة فطيرة بفتحة دبوس 16 مم غير عاكسة لكاميرا Canon RF Mount
