Should young people choose 50 1.8 or 85 1.8 for the first time?

Choose 50 1.8 for large aperture fixed focus.

Fixed-focus lenses are optimized for specific focal lengths, so the optical performance is usually much better, while still maintaining a fairly compact size. Generally speaking, fixed-focus lenses are smaller, lighter and more compact than zoom lenses, and tend to focus faster, providing a large aperture of f/ 1.2. And the maximum aperture of most professional zoom lenses.

Many photographers like to take portraits with a large aperture, which can be used to raise the shutter and freeze the picture. This becomes very important when shooting with a camera in low light. In addition, a large aperture can provide a narrow depth of field, thus creating beautiful scenery in the background or foreground.

Brief introduction of large aperture fixed focus:

In portrait photography, the focal length segments of classic fixed-focus lenses are usually 35mm, 50mm and 85mm. A lens suitable for shooting wide pictures. The width is enough for narrow streets or landscapes, but it should not be too wide, which will distort the picture. 35mm is also the focal length of most smart phones.

The focal length of 35mm is a wide-angle lens, and the close-up will produce some distortions, which will deform the face or body of the subject. But for street shooting, shooting architecture and traveling, this is definitely the first choice.