How to choose the lens of self-made telephoto lens

There are several key factors to consider when choosing domestic telephoto lenses. The first is the focal length, that is, the zoom range of the lens. A longer focal length can help you shoot distant objects and achieve greater magnification. Secondly, optical quality includes transparency, color reproduction and distortion control. High-quality lenses can provide clearer and more realistic images. In addition, the aperture size of the lens is also very important, which determines the amount of light entering and the degree of blur effect.

When choosing lenses, you can consider the following points. The first is the brand and manufacturer of lenses. Well-known brands usually have high quality control and advanced optical technology, which is worth considering. The second is to check the optical parameters and technical indicators of the lens, such as transmittance, antireflection film, coating and so on. These parameters will directly affect the optical performance of the lens.

In addition, you can also refer to the evaluation and recommendation of other photographers and professional photographers. Their experience and opinions can help you understand the advantages and disadvantages of different lenses and choose the lens that suits your needs.

It should be noted that self-made lenses require certain skills and experience, and have a certain understanding of optical knowledge and lens assembly. In addition, the costs and risks of homemade lenses also need to be considered. If you don't have enough experience and resources, it is recommended to choose professional lenses on the market to ensure the shooting effect and safe use.

In a word, when choosing self-made telephoto lenses, we need to consider factors such as focal length, optical quality and aperture size, and refer to brands, optical parameters and other people's evaluations. At the same time, we should also weigh our own technology and resources and choose the way that suits us.