INDUSTAR-69  2.8/28mm

This lens does not cover full format.

Focal length: 28mm, 42mm in crop mode
Mount: M39, but have a look at the last paragraph
Aperture: F 2.8 - F 16
Min focus distance: 0.80m
Length (from flange): 18/19mm [+ 11mm for the adapter],
rear element protrudes 4mm
Diameter: 48mm
Weight: 45gr.

Some pictures:

A7 and the lens.

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 for comparison. Focus is on the satellite dish to the right of the big solar panel near the center of the photo.

Uncropped, F 2.8.

F 2.8.

F 8.

F 16.

Closest focus (F8) is 50cm from outermost edge of the lens. Focus on the program wheel of the camera.

As this lens does not cover full format (unless you want a Lomo style heavy vignetting), you have to set your camera to crop mode. Wide open it is very soft at the corners, but gets better stopped down. It's an extremely small and lightweight lens, the 42mm in crop mode brings it close to the 45mm standard in the 1930 street photography. It costs near to nothing, but needs an adaption. And it's a lens for the APS-C series, like the A5000/6000.

The original FFD for this lens is shorter than the 28.8mm for standard M39, it's said to be 27.5mm. Quite some sellers "forget" to mention it. There is an easy and quick fix to this, not elegant, but it works. Google "Industar 69 focus fix" and you will find video tutorials. Set the lens to any aperture, but remember, which one you set. You just have to loosen the 3 screws that hold the ring with the distance scale around the lens, lift it, turn it over and take off the stop screw inside. Put it back and let the point for the aperture coincide with the aperture you set. Rescrew. If it doesn't turn easily, it might be necessary to lift the ring about 1mm from its original position, it screws nevertheless. You can now turn the lens way beyond the original infinity stop, just enough to have infinity with M39 FFD. And there is no stop on the other side, you could unscrew the lens. So please do not make more than one full turn. Your distance scale is haywire, but the lens works. Not elegant, as I said. You could also align the infinity mark to its new stop and create a new mark for the aperture. Put a little drop of silver or white paint over the old dot and make a new red one. A better solution would be to sand down the threaded ring of your adapter. Please refer to the russian lens page how to do this.