Here are some more pictures taken with the Yashica J. The lens is sharp, and the shutter speeds are adequate for daylight pictures. The film used was a Kodak BW 400 CN.
There are no parallax marks in the viewfinder so the framing for the close up shots is off!
I found the camera for 10 euros. The shutter curtain is broken, so the camera does not work. It had the Canon EF 35-80mm lens that can be modified for macro if the front lens element is removed.
These were taken with the 35-80mm that had the front element removed
The Yashica J is a simple rangefinder camera. Shutter speeds are only 1/25, 1/50 1/100, 1/300 plus B.
Maximum aperture is f 2.8. Focusing is done with a rangefinder in the viewfinder.
I loaded a Kodak CN400BW film.
Here are some samples