What factors should be considered when selecting a telescope for astrophotography, and how do different optical designs (e.g., refractor, reflector, catadioptric) influence performance?
What is the role of neutral density (ND) filters in photography, and how can they be effectively used to achieve creative effects like long exposure shots in various lighting conditions?
How does image stabilization technology in cameras and lenses work, and what are its benefits and limitations for handheld shooting, especially in low-light conditions?
What are the key optical specifications to consider when purchasing a new camera lens, and how do they impact photographic outcomes like sharpness, focus speed, and distortion?
How do the different types of camera sensors (such as full-frame, APS-C, and micro four-thirds) affect image quality, depth of field, and overall performance in various photography scenarios?
