The Kaleinar 100mm f2.8 is a super sharp lens that offers a slightly different focal length and a slightly different coating from the other lenses. Use this lens at your own experimentation and discretion . My opinion is that the luma and colours will have more dormancy than vibrancy .
This lens does cover Full Frame, Super 35mm and m4/3 digital sensors. This lens is in EF, matches well enough to the Zuiko lenses, which offer a little more yellow vs. amber tones found in the Zenitar lenses.