Review of Helios 135mm F2.8 M42 lens [ Ссылка ]
You can skip directly to these time stamps, which are about:
0:23 - Ergonomics, focusing and aperture
0:52 - M42 adapter
1:17 - Aperture
1:29 - Video test samples, bokeh and changing the focus
2:18 - Aperture and bokeh
2:35 - Backlight, lens flare, ghosting
3:02 - Photo test samples
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