Yes, absolutely recommended. The L with 1.2 is of course much sharper and better corrected in the corners, but the 1.4 brings very good results on my 5D Mark III 

It's an EF mount. If RP then the adapter logically arises by itself. 

Could you please update us your full Minolta lens model ?as Minolta has MD MC and AF mount, K&F Concept MD-M4/3 is suitable for: Lens: Minolta MD MC Mount lens(not for Minolta AF mount: KF06.157) Camera: Micro 4/3 (MFT) mount mirrorless camera like Olympus PEN, OM-D series, Panasonic Lumix DMC-G1, G2, G3, G10, GX1, GH1, GH2, GF1, GF2, GF3, GF5, GH4, Panasonic AG-AF100 Mirrorless Digital Cameras, Black Magic Pocket Cinema Camera (BMPCC) 

( such as A Hasselblad or Mamiya 645 or Pentax) can be attached to this tripod. However, even though this is a great medium duty tripod, to put that amount weight on top might make it a little unstable. Now if you’re anchored on good solid ground, with little to no wind this tripod will most likely work well. Just don’t walk away if conditions are not optional. Have fun and enjoy your photo adventure. 

Please note: our M42 adapter ring could not be suitable for Pentax Takumar Super Takumar Carl Zeiss M42 series（aperture pin does not fully depress, small tabs sticking out), as ours depresses the aperture pin all the way down