Vishniac used both a Leica and a Rolleiflex camera in his photography.

Entity and relation annotations:
id: 0
type: entity
value: text: Vishniac
labels: <Person>
id: 1
type: entity
value: text: Leica
labels: <Production>
id: 2
type: entity
value: text: Rolleiflex camera
labels: <Production>
type: relation
to_id: 1
labels: Person:owns/uses:Production
from_id: 0
type: relation
to_id: 2
labels: Person:owns/uses:Production
from_id: 0