On the lens matching of EOS 50D.

EOS 50D is an APS digital camera with interchangeable lenses, which is compatible with EF series lenses (including EF-S series lenses) (the converted focal length of 35 mm is about 1.6 times the focal length of the lens). If Canon 85 fixed focus is selected, the result is equivalent to 136MM medium telephoto lens. Suggestion: Do not choose.

Mainly take wedding photos and artistic photos, mainly contact portraits and deal with portrait photography. If you have a large aperture, you should first consider 2: Canon EF-S 18-55mm f/3.5-5.6 IS, which can be considered, but it is not ideal, because its focal length is multiple of 1.6 times on EOS 50D, and the aperture is correspondingly reduced. Sigma 50 fixed focus 1.4, optional. The problem is that it is a secondary factory product, and its safety and stability cannot be guaranteed. My opinion: Choose Canon EF 50/ 1.4 USM and EOS 50D fixed focus 80, which is very suitable for wedding and art photos.

If you have any questions, you can ask them.