The used Leica 90mm f/2.4 Summarit-M is a budget-friendly telephoto lens and update to the Leica 90mm f/2.5 Summarit-M. Key features include:

Fully Manual M-Mount. Designed for Leica Digital Rangefinders, the 90mm f/2.4 Summarit-M is a short-telephoto/portrait-length lens for use with M-mount cameras and adapters.

Faster Aperture. While this lens’s f/2.4 aperture isn’t going to enable vastly different photo opportunities than its predecessor’s f/2.5 aperture, it’s different nonetheless.

Leica Quality. This lens is built to the same standards as other Leica lenses, meaning that you’re getting a high-quality metal build with premium optics. Its four-group/six-element design produces images with great corner-to-corner sharpness. 6-bit coding auto-adjusts frame lines and transmits EXIF data to the camera.