Hi Semir,
My Philips TF651A indeed displays a somewhat better definition.
The modulator I used is MC44BS373 based and thus has a limited bandwidth.
Nevertheless, with this the TF651A can display 650 lines horizontal (819 vertical).
To the naked eye it looks better than I managed to catch in a photo.
Due to influence from the magnetic field of the mains transformer, the picture wobbles a tiny bit, and this does not help for a sharp photo (and combine that with my very limited photographic capabilities
)
Jac