If I could do only one thing for calves this is it. It does not matter what angle you start with. I aim for 8-12 reps each for about 30 reps total. 5 sets minimum here. Calves can take a lot of abuse. I try to be mindful to pause at the top of the movement and squeeze my calves at each rep. Sometimes following the pause I will try to raise myself up even a bit higher. For greater range of motion I preform them using a low block. If that is not available lay a 45lb plate on the floor and use that. Moderate weight. Beginners use body weight to one plate. intermediate 1-2 plates. Advanced 2+ 45lb plates on each side.