Focus Adjustment on 150-400mm F4.5

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mikero
mikero Senior Member • Posts: 2,213
Focus Adjustment on 150-400mm F4.5
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After initially just going out to play with my new lens, I thought today I should actually test it.  At the short end of the zoom it seemed fine, but at the long end (with and without the internal TC) it seemed to consistently back-focus by about 3cm.  Using the Focus Adjustment feature on my E-M1X, I've dialed in a value of -2 at the tele end which seems to bring the focus forward to where it should be.

Anyone else done a focus adjustment on their 150-400mm lens?

Mike

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