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. **

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. **

For wildlife photography, a camera with a fast continuous shooting speed, high resolution, and good low-light performance is ideal. Cameras like the Canon EOS 90D, Nikon D500, or Sony Alpha a6600 are popular choices. When it comes to lenses, a telephoto lens with a focal length of at least 300mm is recommended to capture distant wildlife without disturbing them. Lenses like the Canon EF 100-400mm f/4.5-5.6L IS II, Nikon AF-S NIKKOR 200-500mm f/5.6E ED VR, or Sony FE 200-600mm f/5.6-6.3 G OSS are great options for wildlife photography. **

The choice between a digital single-lens reflex (DSLR) camera and a mirrorless camera depends on individual preferences and needs. DSLRs are known for their optical viewfinders, longer battery life, and extensive lens options, while mirrorless cameras are lighter, more compact, and offer silent shooting and real-time exposure previews. If you prioritize traditional photography features and a wide range of lens options, a DSLR may be the better choice. However, if you value portability, advanced autofocus systems, and electronic viewfinders, a mirrorless camera may be the better option for you. **

The best camera for wildlife photography is typically a DSLR or mirrorless camera with a high resolution sensor, fast autofocus system, and good low-light performance. Popular choices include the Canon EOS 5D Mark IV, Nikon D850, or Sony A7R IV. For lenses, a telephoto lens with a focal length of at least 300mm is recommended for capturing wildlife from a distance. Some popular options include the Canon EF 100-400mm f/4.5-5.6L IS II, Nikon AF-S 200-500mm f/5.6E ED VR, or Sony FE 100-400mm f/4.5-5.6 GM OSS. Ultimately, the best camera and lens will depend on your budget, specific needs, and personal preferences. **

There could be a few reasons why your camera lens may not fit on your camera. First, ensure that the lens mount on the camera and the lens are compatible. If they are not, the lens will not fit. Additionally, check for any physical obstructions or damage on either the lens or the camera mount that may be preventing the lens from attaching properly. If everything seems to be in working order, it's possible that you may have a different type of lens mount adapter that can be used to make the lens fit on your camera. **

It is difficult to determine the specific camera lens without more information. Camera lenses come in a variety of focal lengths, apertures, and features, so it would be helpful to know more details such as the brand, model, and any specific characteristics of the lens in question. Without this information, it is challenging to accurately identify the specific camera lens. **