Preheat the oven to 230 degrees Celsius (450F)
Place the salmon fillets in a baking dish and season each with salt and pepper
Finely dice the capers, dill. Add the mayonnaise and lemon juice to a bowl and stir in the capers, dill and garlic. Once well mixed spoon the mayo mixture onto each of the salmon fillets and spread it out evenly in a thin layer. Top each of the salmon fillets with a slice of lemon.
Bake the salmon in the oven for 7 minutes. Sprinkle with additional dill before serving.