OutOfMemory AlunosAdapter | Android II: Integração com apps e recursos do device

Para tentar melhorar a performance da listagem da agenda, fiz um ViewHolder conforme recomendado, porém estou tomando a exception OutOfMemory quando dou um BitmapFactory.decodeFile.

Segue trecho do código do meu adapter:

AlunosAdapter.java

public View getView(int position, View convertView, ViewGroup parent) {
        View view;
        ViewHolder holder;

        if (convertView == null){
            view = LayoutInflater.from(context).inflate(R.layout.list_item, parent, false);
            holder = new ViewHolder(view);
            view.setTag(holder);
        } else {
            view = convertView;
            holder = (ViewHolder) view.getTag();
        }

        Aluno aluno = (Aluno) getItem(position);
        holder.nome.setText(aluno.getNome());
        holder.telefone.setText(aluno.getTelefone());

        if(aluno.getPathFoto() != null) {
            Bitmap bitmap = BitmapFactory.decodeFile(aluno.getPathFoto());
            holder.foto.setImageBitmap(bitmap);
        }

        return view;
    }

ViewHolder.java

public class ViewHolder {

    public final TextView nome;
    public final TextView telefone;
    public final ImageView foto;

    public ViewHolder(View view){
        nome = (TextView) view.findViewById(R.id.item_nome);
        telefone = (TextView) view.findViewById(R.id.item_telefone);
        foto = (ImageView) view.findViewById(R.id.item_foto);
    }
}

Exception:

java.lang.OutOfMemoryError: Failed to allocate a 64256268 byte allocation with 16777216 free bytes and 25MB until OOM
                      at dalvik.system.VMRuntime.newNonMovableArray(Native Method)
                      at android.graphics.BitmapFactory.nativeDecodeStream(Native Method)
                      at android.graphics.BitmapFactory.decodeStreamInternal(BitmapFactory.java:635)
                      at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:611)
                      at android.graphics.BitmapFactory.decodeFile(BitmapFactory.java:391)
                      at android.graphics.BitmapFactory.decodeFile(BitmapFactory.java:417)
                      at com.example.luizpacinni.agenda.adapter.AlunosAdapter.getView(AlunosAdapter.java:63)

protected void onActivityResult(int requestCode, int resultCode, Intent data) { if (requestCode == CODIGO_CAMERA && resultCode == Activity.RESULT_OK){ Bitmap bitmap = BitmapFactory.decodeFile(pathFoto); bitmap = Bitmap.createScaledBitmap(bitmap, 512, 512, true); File file = new File(pathFoto); try { FileOutputStream outputStream = new FileOutputStream(file); bitmap.compress(Bitmap.CompressFormat.PNG, 90, outputStream); outputStream.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } helper.carregaFoto(pathFoto); } }