|image by yashicasailorboy (Image rights)
The Yashica J-P was a 1964 revision of the earlier Yashica Penta J, adding a self-timer. Unlike the numbered "J" models, no CdS meter was built into the body; instead, an accessory clip-on meter was sold which coupled to the shutter-speed dial.
|With accessory light meter
image by Bernard Faure (Image rights)