Focal length: 50mm
Aperture: F 3.5 - F 16
Min focus distance: 1m
Length (from flange): 10/36mm [+ 11mm for the adapter], tube protrudes 18mm to the back when
Diameter: 48mm (base)
A7 and the lens, collapsed
A7 and the lens, extended.
Sample pictures: You may click
on the sample image (except closest focus) for full resolution. The
full resolution image opens in a new window, so you can keep it open
Focus is on the
dish to the right of the big solar panel near the center of the photo.
There is quite some dust on the sensor, I played with Lensbabies and
clones which aspired dust.
Closest focus is ~ 0.9m from
edge of the lens, F 8. Focus on
the program wheel of the camera.
This lens is an Industar-10 design, made by FED. It's a Zeiss Tessar
formula, 4 elements in 3 groups. Elements 3 and 4 are cemented. It's said that it was copied from the Leitz Elmar, which is the Zeiss design.
My lens is coated and has the serial number on the front. According to
the number it's from the mid-1950s. It has a clip lock for infinity,
not a push-button, as the Industar-22. Depending on your adapter, the
push button can be a problem, so a late Industar-10 might be preferable
to a 22.
Already wide open
picture quality is o.k, it's a bit soft towards the edges. Stopped down it's astonishing for such
an old lens and a simple lens design. Have a look at the full resolution image
at F 16 and you know what I mean. The lens has no
close focussing capablities. It is very small, lightweight and cheap. A
very nice legacy lens to start with.
lens is collapsible. There is enough room iside the A7 to collapse it,
at least with my version, but you have to try at your own risk. Please
proceed slowly, you don't want to aspire dust into the camera. It's an
extremely small and lightweight lens.
lens can not be fully collapsed into the A6000. It touches the plastic
around the opening for the sensor. If you push cautiously, it collapses
quite a bit, but again it's at your risk.