Lens-Hack #2 – Converting a Trioplan 50 2.9 Altix lens to Canon EOS – DIY style

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  • Tex-S

    I’ve seen several of these ‘hack’ pages for the trioplan, bit no one has directly addressed the question of far focus capability after the m42 adapter is employed. I know the whole point is to shoot it wide open in portraits and macro situations, but by extending the already too short 42.5 register out to 45.5 with the m42 mount, you end up 3 full mm further from the sensor than the original design. What maximum focus distance does that end up giving you?

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