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<p>[QUOTE=&quot;rmpsrpms, post: 2773714, member: 31773&quot;]I have one almost exactly like it. The 4 outer pins are for alignment to the bracket that fits the post. You should be able to remove the upper bracket, flip it around, and screw down the other end, and the screws will align it to the lower bracket.</p><p><br /></p><p>I&#039;ve used it a couple times, but have always thought it was a little weird.</p><p><br /></p><p>As SuperDave says, the vertical adjust is just a slider, so not much use for fine focusing. You will need to focus with your lens, which has the disadvantage of making your shots all different magnifications. Every time the lens focuses, it changes magnification a little (or a lot). Every shot is different.</p><p><br /></p><p>Or you could buy a focus rail.[/QUOTE]</p><p><br /></p>

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