Wisner 4x10 Technical Field Panorama Camera
was a dream camera designed to satisfy the demands of the most ardent expert enthusiasts. 4x10 is a practical panorama format representing one bisect of 810 film. It weighs only 7.5 lbs. Not including the strap, dimensions are 11 5/8" x 5" x 8". The 4x10 is equipped with a user interchangeable bellows.
Essentially the 4x10 is a 4x5 Technical Field with a 4x10" back and cherry red leather bellows attached.
It uses 4" lensboards. The metal fittings are brass. The wood is mahogany.
Wisner also offered a 4x10 Expedition version made of black American cherry and aircraft aluminum.
This is the typical base plate of a Wisner camera. Please note the excellent joinery. No metal required.
By contrast the Ebony camera employs metal corners to hold it together and the base consists of
one large metal plate with up to 20 reinforcing screws.
The 4x10 Ground Glass Cover.
Interchangeable kid leather bellows.
The camera was available with a gridded ground glass 4x10 focus screen
or with plain plastic focus screens that were less likely to break in the field.
This is a 410 to 5x7 reduction back.
To complete the package you would need some 4x10 film holders.
One option would have been Lisco Regal 4x10 X-ray film holders shown below.
A more compact option might be Mido II film holders with clamshell.
Although reputed to have light leaks these units did not.
7 holders with the clamshell adapter weigh 1.5k (3.3 lbs).
When stacked they measure 5.7cm (2.25").