The lens has slight damage but is fully functional, namely, the front ring is concave and therefore the product is discounted.
FED macro lens 3.5/50
Focal length: 50mm
Field of view angle: 46°
Frame size: 24×36mm
Number of lenses/groups: 4/3
Working length - ~ 28.8 mm
Relative aperture: 1:3.5
Aperture scale limits: 1:3.5–1:18
Number of aperture blades - 10
Aperture adjustment - stepless
Aperture preset - no
Close focus limit - 50 cm
Connections:
camera lens - M39×1
Filter mount location: front
Resolution according to specifications (center / edge): unknown
Weight - 100 grams.
With a SLR camera, the rangefinder lens will only work in macro mode. Full use is possible on a mirrorless camera.
Type Brand Link to adapter
SLRs
Nikon M39-Nikon F
Canon M39-Canon EF
Sony M39-Sony/Minolta
Pentax M39-pentax K
Mirrorless
Sony M39-NEX
Olympus/ Panasonic M39-m 4/3
Fuji M39-FX
Nikon M39-Nikon 1
Externally, the lens is almost indistinguishable from a staffer. Same foldable design. There are no additional markings on the front end. Everything is typical of early post-war models.
This copy is not enlightened. Options with enlightenment and modern aperture steps are less common.
The diaphragm is controlled by a leash on the anterior cut.
Aperture blades 10 pieces. The petals are blackened and quite matte.
To focus, you need to move the leash, which can be parked in a special fork in the infinity position. To remove the leash from the parking lot, you need to press the top part.
The depth of field scale is marked on the conical part of the base.
At the beginning, a standard distance scale is applied on a flat pursuit. If you move the leash in the direction of decreasing distances, then reaching the end of the standard scale, the helicoid will no longer rotate.
This is because on the opposite side the leash will rest against this pin-stopper.
In order to use the lens in macro mode, this pin must be unscrewed with a screwdriver.
After that, the helicoid can move further on an additional scale. On it, the distances are already plotted in centimeters.
It is only necessary to take into account that the stopper is no longer there, and nothing keeps the helicoid from simply unscrewing and falling out of the thread, if the distance risk is taken out of the scale.