The Suter aplanat which was the F5 version was a very popular alternative Portrait lens in Scandinavian Studios in the post 1890 period. I don't know why it is more common than the Voigtlander Euryscopes - perhaps pricing? I have acquired at least 3 studio camera sets with the same F5 aplanats. By the time the Stella appeared, there was no longer any real growth in the number of established family portrait studios.