LEITZ SUMMITAR 1:2 F=5cm

This lens is collapsible.


Focal length: 50mm
Mount: M39
Aperture: F 2.0 - F 16
Min focus distance: 1.0m
Length: 24mm collapsed, 43/47mm [+ 11mm for the adapter],
tube protrudes 17mm to the back when collapsed
Diameter: 48mm
Weight: 202gr.

Some pictures:


jpg_lens/50mm_leitz_IMG_8634.JPG
A7 and the lens

jpg_lens/50mm_leitz_IMG_8636.JPG
A7 and the lens
, collapsed.

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.

jpg_sample/w_50mm_leitz_f2_DSC01383.JPG
F 2.0. ISO 100.

jpg_sample/w_50mm_leitz_f8_DSC01385.JPG
F 8.

jpg_sample/w_50mm_leitz_f16_DSC01386.JPG
F 16.

jpg_sample/w_50mm_leitz_cf_f8_DSC01388.JPG
Closest focus  is 75cm from the outermost edge of the lens, F 8. Focus on the program wheel of the camera.

According to the serial number, this lens is quite old, it has been made in 1949. The sample pictures were taken on a stormy winter day, not ideal for samples, the results would have been better on a sunny summer day.

Wide open it's soft at the edges, but it's perfectly usable. Stopped down it's sharp.  Its contrast is astonishing for such an old lens The lens has no close focussing capablities. It is very small and lightweight, particularly for a F 2 lens. A nice old lens which offers one usable stop more than a standard lens. I like it a lot.

This lens is collapsible. There is enough room inside my camera to collapse it, it doesn't collaps as far as some other M39 lenses, but you have to act at your own risk. Please proceed slowly, you don't want to aspire dust into the camera.

I have another lens that had an accident, the front lens couple has separated in a large area, visible on the photos. I would have re-cemented the couple, if I had found a way to take the couple out of its ring. The ring unscrews easly, but the couple has been pressed or peened into the ring. No way to get it out at reasonable cost. Any proposal would be welcome. So it was tested with its flaws.

Some pictures of the defective lens:

jpg_lens/50mm_summitar_IMG_3187.JPG
A7 and the lens, collapsed

jpg_lens/50mm_summitar_IMG_3185.JPG
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 for comparison. Focus is on the satellite dish to the right of the big solar panel near the center of the photo.

jpg_sample/w_50mm_summitar_f2_DSC01170.jpg
F 2.0. ISO 100.

jpg_sample/w_50mm_summitar_f8_DSC01171.jpg
F 8.

jpg_sample/w_50mm_summitar_f16_DSC01172.jpg
F 16.

jpg_sample/w_50mm_summitar_cl_f8_DSC01173.jpg
Closest focus  is 88cm from the outermost edge of the lens, F 8. Focus on the program wheel of the camera.

The picture results have stunned me. There is a soft area, like an overcast, down to the right. But the rest is still much better than I thought. Wide open it's a bit soft at the edges, but it's perfectly usable. Stopped down it's sharp.  Its contrast is astonishing for an old and battered lens.

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