Basic CALCULATE question OR a strange phenomenon

thanx for the reply.

However, I should have explained my original intention a bit more.

My intention was that the mentioned Measure diplays the same value for all fields in the Matrix-Visual. The problem was, that it did not do it, as I was expecting.

I think I understand the difference to your measure (i.e. using FILTER, because CALCULATE evaluates its filter arguments in the original evaluation context).

However, when I understand correctly my measure could be written with FILTER as well:

Quantity Europe = 
    CALCULATE ( 
        SUM( Sales[Quantity] ), 
        Store[Continent] = "Europe"
        )

Is the same as

Quantity Europe FILTER = 
    CALCULATE ( 
        SUM( Sales[Quantity] ), 
        FILTER(
            ALL( Store[Continent] ),
            Store[Continent] = "Europe"
        )
    )

But in my data model (not the contose sample file) it looks like as if the measure 

Quantity Europe = 
    CALCULATE ( 
        SUM( Sales[Quantity] ), 
        Store[Continent] = "Europe"
        )

behaves like this measure

Quantity Europe FILTER woALL = 
    CALCULATE ( 
        SUM( Sales[Quantity] ), 
        FILTER(
            Store,
            Store[Continent] = "Europe"
        )
    )

which produces this result, that I do not want: