How much of infinity focus do you lose (extension)?

Started Mar 2, 2014 | Discussions thread
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(unknown member) Senior Member • Posts: 1,324
How much of infinity focus do you lose (extension)?

Let's say I extend the lens 3mm from where it would normally sit. How much of infinity focus do I lose? What's the likely maximum focusing distance for a 100ish mm lens if it originally focused to infinity but not beyond? (In case you're wondering this is a lens adaptation question)

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