The B+W 58mm Screw-In Metal Lens Hood #950 is compatible and will not vignette on the Minolta MC Rokkor PG 58mm 1:1.2 – MC-X Lens.

As long as the 75mm medium format lens in question has a 58mm filter thread, you could use the B+W 58mm screw-in lens hood with the lens.

Most likely, yes. The B+W 58mm Screw-In Metal Lens Hood #950 is designed for use with lenses 50mm and longer. The B+W 58mm Screw-In Metal Wide Angle Lens Hood #970, B&H # BWLHWAM58, would be the widest lens hood designed by B+W, however, it is designed for lenses with an angle of view up to 70 wide (approx. 28mm in 35mm format). You would get slightly less vignetting with the 970 lens hood compared to the 950 lens hood.

You may get vignetting on the wide angle setting, I would recommend the Canon specific hood, EW63. https://bhpho.to/36sCces

As this lens hood is optimized for 50mm lenses, I would recommend using the lens hood that is dedicated for the Voigtlander Nokton 58mm f/1.4 SL-II N lens instead: <a href= http://bhpho.to/1afvTOE target= _blank >http://bhpho.to/1afvTOE</a>

40mm is not very wide and the B+W 58mm Screw-In Metal Lens Hood #950 is not extremely long, so it shouldn't vignette.