This lens has a Canon EF lens mount. This means it is compatible with Canon DSLR cameras that use the EF mount, as well as some mirrorless cameras with an EF to RF mount adapter. The EF mount is a widely used and versatile mount, allowing for compatibility with a wide range of Canon cameras. **

Yes, there is a lens hood available for the lens. A lens hood is a useful accessory that helps to reduce lens flare and glare by blocking unwanted light from entering the lens. It can also provide some protection for the front element of the lens. It is recommended to use a lens hood whenever possible to improve the overall image quality. **

The answer to this question depends on your specific needs and preferences. The Canon 18-135mm lens offers a versatile focal range in a single lens, making it convenient for everyday shooting. On the other hand, the combination of the 18-55mm and 55-250mm lenses provides a wider range of focal lengths, which can be beneficial for capturing a variety of subjects such as landscapes and wildlife. Ultimately, if you prioritize convenience and versatility, the 18-135mm lens may be the better option, while if you value a wider range of focal lengths and potentially higher image quality, the combination of the 18-55mm and 55-250mm lenses could be more suitable. **

During autofocus, the lens in a camera with autofocus 2 technology adjusts its position to bring the subject into sharp focus. This is achieved through the movement of internal lens elements controlled by the camera's autofocus system. The lens continuously makes small adjustments to its focus position until the subject is in focus, allowing for quick and accurate focusing. This technology is particularly useful for capturing fast-moving subjects or for ensuring sharp focus in challenging lighting conditions. **

No, a converging lens and a diverging lens are not the same. A converging lens is thicker in the middle and causes parallel rays of light to converge at a focal point, while a diverging lens is thinner in the middle and causes parallel rays of light to diverge. Converging lenses are used to create real images, while diverging lenses are used to create virtual images. Therefore, the two types of lenses have different optical properties and applications. **

A zoom lens is generally better suited for wildlife photography because it offers versatility in framing the subject without having to physically move closer or further away. This is especially important when photographing unpredictable wildlife in their natural habitat. However, a prime lens can also be effective for wildlife photography, particularly for capturing specific details or in situations where a lighter and more compact lens is preferred. Ultimately, the choice between a prime lens and a zoom lens for wildlife photography depends on the specific needs and preferences of the photographer. **

No, the Canon lens is not necessarily defective just because it cannot be adjusted. Some lenses are designed to have fixed focal lengths and cannot be adjusted, such as prime lenses. However, if the lens is supposed to have adjustable focal lengths and it cannot be adjusted, then it may be defective and in need of repair or replacement. It is important to refer to the specific specifications and capabilities of the lens to determine if it is functioning properly. **

The best PC combination depends on your specific needs and budget. If you are a gamer, a high-performance gaming PC with a powerful graphics card and fast processor would be ideal. For productivity tasks, a PC with a good balance of processing power and RAM would be more suitable. Consider your usage requirements and budget to determine the best PC combination for you. **