function TCanonCamera.DownloadLiveData(Image:TImage) : Boolean;
var
  stream : EdsStreamRef;
  evfImage : EdsEvfImageRef;
  FileName : String;
begin
  Result := False;

  FileName := TimeToStr(Now());
  FileName := StringReplace(FileName,':','',[rfReplaceAll]);
  FileName := 'D:\Project\CCCp 0.0.17\bin\LV'+FileName+'.jpg';
  { create file stream }
  stream := nil;
  Self.LastError := EdsCreateFileStream( PChar(fileName), kEdsFileCreateDisposition_CreateAlways,
                                          kEdsAccess_ReadWrite, stream );
  if Self.LastError <> EDS_ERR_OK then
    Exit;


  evfImage:=nil;

  Self.LastError := EdsCreateEvfImageRef(stream, evfImage);
  if Self.LastError <> EDS_ERR_OK then
  begin
    EdsRelease(stream);
    Exit;
  end;

  Self.LastError := EdsDownloadEvfImage(Self.FRef , evfImage);
  if Self.LastError <> EDS_ERR_OK then
  begin
    EdsRelease(evfImage);
    EdsRelease(stream);
    Exit;
  end;

  Self.LastError := EdsRelease(evfImage);
  if Self.LastError <> EDS_ERR_OK then
  begin
    EdsRelease(stream);
    Exit;
  end;

  Self.LastError := EdsRelease(stream);
  if Self.LastError <> EDS_ERR_OK then
    Exit;

  Result := True;
end;