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Contrast and saturation sit at fairly average levels by today's standards, though this only adds to the lens's vintage charm, and it performs equally well whether paired with a digital body or loaded into an analogue film camera.
Source : https://www.techsyncweb.com/how-to-properly-care-for-your-helios-442-58mm-f2-a-comprehensive-guide/
Performance and Longevity of Your Helios LensHandling Practices to Preserve the Aperture Mechanism and Focus RingThe Helios 44-2 uses a preset aperture design, which requires setting the desired aperture value on one ring before physically closing the blades using a second ring.