C++11: variadic lambda template for calling the default constructor of a type

I want to create a template for a std::function<T(Variable nums of arguments)> that returns the default value of a class by calling the default constructor.

I tried this:

template <class T,class... Args> inline std::function<T(Args...)> zero(){
    return [](Args...){ return T();};
}

I want to use it in occasions where you just need the default value and no complicated function, for instance in my Image<T> class:

template <typename T> class Image{
    ...
    void drawEachPixel(std::function<T(size_t,size_t)> func){
        forRange(x,w){
            forRange(y,h){
                this->setPixel(x,y,func(x,y));
            }
        }
    }
    ...
};

to clear an image I could just call:

image.drawEachPixel(zero());

when compiling I get the error no matching function for call to 'Image<unsigned char>::drawEachPixel(std::function<unsigned char()>)'...