The autofocus in DSLR cameras is typically located in the lens. This is known as "lens-based autofocus" or "AF lens." The lens contains a motor that adjusts the focus based on the camera's instructions. Some DSLR cameras also have a secondary autofocus system in the camera body, known as "phase detection autofocus," which works in conjunction with the lens-based autofocus for faster and more accurate focusing. **

As an AI, I have been programmed with a vast amount of information about cameras and photography. I understand the technical aspects of good cameras, such as sensor size, lens quality, and image processing capabilities. I also have knowledge about composition, lighting, and other elements of photography that contribute to creating high-quality images. Additionally, I can provide information about different types of cameras, lenses, and accessories that are commonly used in photography. **

A prime lens with a focal length between 35mm and 50mm is typically considered suitable for street photography. These lenses offer a natural field of view that closely resembles what the human eye sees, making them great for capturing candid moments in urban environments. Additionally, prime lenses are often compact and lightweight, which is ideal for street photographers who need to move quickly and discreetly. Overall, a 35mm or 50mm prime lens is a popular choice among street photographers for its versatility and ability to capture authentic moments. **

A macro lens is typically the best choice for product photography. Macro lenses are designed to capture small subjects with great detail and clarity, making them ideal for capturing the intricate details of products. They also have a close focusing distance, allowing you to get up close to the product for detailed shots. Additionally, a lens with a focal length between 50mm and 100mm is recommended for product photography as it provides a natural perspective and minimizes distortion. **

A speed camera typically has two cameras. One camera captures the image of the vehicle as it approaches the camera, while the second camera captures the image of the vehicle as it passes the camera. This allows the speed camera to calculate the vehicle's speed by measuring the time it takes for the vehicle to travel between the two camera points. **

Yes, traffic light cameras are equipped with cameras that are used to capture images or videos of vehicles running red lights or speeding. These cameras are typically mounted on top of the traffic lights or on nearby poles to capture clear images of the vehicles and their license plates. The images or videos captured by these cameras are then used as evidence to issue traffic citations to the violators. **

The best all-around lens for Micro Four Thirds (MFT) cameras is typically considered to be a standard zoom lens with a focal length range of around 12-35mm or 14-42mm. These lenses offer a versatile range of focal lengths, making them suitable for a wide variety of shooting situations, from landscapes and portraits to everyday snapshots. Additionally, they often have a compact and lightweight design, which complements the portability of MFT cameras. Some popular options include the Panasonic Lumix G Vario 12-35mm f/2.8 and the Olympus M.Zuiko Digital ED 12-40mm f/2.8 PRO. **

For animal photography, a camera with a fast autofocus system and high burst rate is essential to capture fast-moving subjects. A good choice would be a DSLR or mirrorless camera with at least 20 megapixels for high-quality images. As for the lens, a telephoto lens with a focal length of 70-200mm or longer is recommended to get close-up shots of animals without disturbing them. Additionally, a lens with image stabilization can help reduce camera shake when shooting handheld in low light conditions. **