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dual focus technique


Lee Kelly
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I was sifting through 50000000000 forum threads via a search and saw a post by someone (maybe one of the experienced guys) suggesting there was a trick used to find 'the sweet spot' on a dual focus setup. Does anyone remember that post???

It was something about setting your taking lens to inf and then rotating attachment focus ring til the background or bokeh looks right or something and locking that position in and then using your taking lens to focus??? Maybe I am tripping?

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18 hours ago, Lee Kelly said:

It was something about setting your taking lens to inf and then rotating attachment focus ring til the background or bokeh looks right or something and locking that position in and then using your taking lens to focus??? Maybe I am tripping?

Look at this video at 4:30" 

This procedure is described by Eric Ivar Persson.

Thanks Eric and all the people on this forum!!

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