Helios 44 and 44 2 Cleaning the Aperture Blades
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Limpeza do diafragma e tratamento de fungos com água oxigenada - lente Helios 44M-6 58mm 2.0 (M42)
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How to lubricate Helios 44 2/58 early USSR lens
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Weird Lens Reviews: Helios 44-2 58mm f/2 with samples (Full-frame and APS-C)
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Want To KEEP Your Lenses? Watch THIS!
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Helios 44-2 refurb. instructions (2nd MUCH more detailed part! Attention: VERY LONG!)
22:03
Helios 44-2 fungus cleaning tutorial
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How to Clean a Vintage Lens with a Huge Fungus Infection
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