The identification of Farmans (Henry and Maurice) is a complex matter, as there are the registrations given by the factory (HF / MF) and the registrations given by the French Service des Fabrications de l'Aviation SFA). The complexity boils down that one Farman factory type was sometimes fitted with different engines en/or crew sitting (pilot front or back etc.). So one factory registration corresponds to more SFA registrations.
Luckily an original list of the SFA has survived in the archives, which can be found here
Coming back on your question, the Farman Type XXX was a Maurice Farman MF 11 bis
with a 130 hp Renault 8C engine. Pilot sitting in the front, specially equipped for photographic
It looked like this, the big camera clearly to be seen. Looking at the seating I would think that the pilot is in the back and the observer (wielding the camera and the machine gun) is in the front. According to the list of the SFA it is then a Type XXXI
Dimensions are given for the MF 11 bis (Type XXX) as:
Span 18, 15 meter ; Length 9,23 meter ; Height 3,00 meter ; Wing area 56 m2
Empty weight 780 kg ; Loaded weight 1155 kg.
(1) Official list of SFA
(2) Liron, Jean. Les avions Farman. Docavia part 21
Have a fine day