This is a listing of every Keystone movie camera of which I am aware. I am not going to list one-ofs, specialty, or minor variants.
Some notes on the table data below:
Model links to a web page where I have the camera itself.
Circa is the year where it first appears in advertising.
Lens Type: Fixed means it has one lens permanently mounted. Turret means that there is a rotating mount with (usually) three lenses. Note that many turret cameras were sold with only one; additional lenses were extra.Zoom means the lens had a variable focal range and was manually adjusted. Power Zoom is a zoom controlled by an electric motor.
Lens: Focal lengths are given where known, but typically only max apertures were quoted in advertising specs. "C-mount" means that the lens is compatible with the c-mount interchangable format. I'm not well-versed in this: it may be that all (or nearly so) of the fixed-mount cameras are C-mount compatible.
Exposure: Auto means the camera has an auto-exposure mode. Manual means the aperture must be set by the operator.
Focus:Â Fixed means the lens has "universal" focus and cannot be changed; it's also the least expensive.Variable means that the lens must be focused by the operator. Note that on turret cameras, it is common to have one variable-focus lens (usually the tele) and the others are fixed.
Finder: Frame means there's a folding metal frame finder, which was very common on 1930s-era cameras because it was inexpensive and also reduced the size and weight of the camera. View is some-sort of enclosed box with a lens. Reflex means that the view comes directly through the taking lens via a split-image mirror. This is the most complex and expensive option.
Docs: links to operator's/owner's manual. I have only included links where the models match up properly.
Src: this is where I got the information. These are listed at the bottom of the page.
|
Model
|
Format
|
Circa
|
Lens Type
|
Lens
|
Focus
|
Finder
|
Exposure
|
Pistol Grip
|
Other |
Price
|
Ad
|
Docs
|
Src
|
|
A-3
|
16mm
|
1939
|
Fixed
|
Æ’/2.7
|
Variable
|
Frame
|
Manual
|
No
|
Normal /1.5 also available. Three running speeds. |
$35.00 to $71.00
|
link
|
1
|
|
|
A-7
|
16mm
|
1939
|
Fixed
|
Æ’/2.7
|
Variable
|
Frame
|
Manual
|
No
|
Normal /1.5 also available. Sames as A-3 but seven speeds. |
$44.50 to $71.00
|
link
|
1
|
|
|
B-1
|
16mm
|
1939
|
Fixed
|
Æ’/3.5
|
Variable
|
Frame
|
Manual
|
No
|
No lens option. Same as A-3 but one speed, fewer other features. |
$29.95
|
link
|
1
|
|
|
K-8
|
8mm
|
1939
|
Fixed
|
½" ƒ/3.5
|
Depends on lens
|
Frame
|
Manual
|
No
|
½" ƒ/2.7 and ƒ/1.9 and 1-½" tele also available. Accepts both "single 8" and "double 8" formats. |
$26.50 to $57.00
|
link
|
1
|
|
|
K-10
|
8mm
|
1960
|
Power Zoom
|
9-27mm Æ’/1.8
|
Variable
|
View
|
Auto
|
Yes
|
Same as K-12but viewfinder, not reflex |
$196.98
|
2
|
||
|
8mm
|
1960
|
Power Zoom
|
9-27mm Æ’/1.8
|
Variable
|
Reflex
|
Auto
|
Yes
|
$174.98
|
3
|
||||
|
K-21
|
8mm
|
1962
|
Fixed
|
13mm Æ’/1.8
|
Fixed
|
View
|
Auto
|
No
|
$54.42
|
3
|
|||
|
K-808
|
8mm
|
1962
|
Zoom
|
9-27mm Æ’/1.8
|
Fixed
|
View
|
Auto
|
Yes
|
Same as K-810but manual zoom |
$92.50
|
3
|
||
|
K-810
|
8mm
|
1962
|
Power Zoom
|
9-27mm Æ’/1.8
|
Fixed
|
View
|
Auto
|
Yes
|
$129.98
|
3
|
Â
Advertising (click image for larger)
.jpg) |
 |
|
|
Sources
- Keystone Catalog - 1939
- K-12 ad, Modern Photography magazine - 1960
- Montgomery Ward Photo Catalog - 1962
