While looking for a larger format I was intrigued the 6x9 format for several reasons. It's wider than the 6x7 aspect ratio, and it's a roll-film format so I can quickly set up for the next shot when shooting small creatures. 6x9 is aproximately double the area of a 645.
|Model||Type||Weight||Max Bellows||Max Focal Length|
The focal length for the SW23 is my measurement, I inferred the max focal length for the other models. Weight and Max Bellows is based on the 2002 Ebony Catelog. The 23S and SV23 feature a full range of rear movments.
The Shen-Hao TFC69-A appears to be modeled after the Ebony 23S.
After shooting a few rolls of film, here is what I like
- Titanium components look amaizing and don't tarnish
- Very fast to configure
- Detents on front stand rotation and tilt
- Lens board and back can be rotated or swapped with very little effort
- No light leaks
The only feature missing is a extension scale on the base.
Fujion 105mm W f/5.6
The first challenge for the new owner of a view camera is lens selection. The image circle defines the limits of camera movements. The Fujion leaf shutters have a very sooth continuous aperture with ⅓-stop markings.
|Horizontal Field of View:||43.6°|
|Shutter Speeds||1/500 ‐ 1s, B, T|
At full extension this provides a magnification of approximately 1:1.
Exposure values were calucated using
log_2((extension / focallength)^2)
The first prt of the equasion determines the
function converts this to an f-stop. Example in Ruby
Math.log2((118.0/105) ** 2) # 0.337 or 1/3
Like many "2x3" cameras, the Ebony line follows the Graflex standard.
The Horseman 8EXP/120 is a superb film back except for the fact that it is easy to confuse with the 10EXP/120 back which takes 6x7, not 6x9.
The Mamiya RB67 6x8 can be operated with or without batteries, and includes a slot to put the film label in.
On both backs the film is advanced by pulling a small lever to the side.
|Make||Weight (grams)||Visible Area (mm)|
|Horseman 120 10EXP||425 (15 oz)||56×68|
|Mamiya RB67 Pro SD 6x8 Power Back||596 (21 oz) ||56×74|
|Horseman 120 8EXP||425 (15 oz)||56×82|
- Without batteries
One of the strange accessories available for 6x9 is a Horseman light meter back. I'm not sure why I would use this instead of hand-held measurements, but it's cool nonetheless. This back takes an obsolete 5.4V battery, but a more common 4LR44 6V battery will work as well.