70-200mm f4 IS + Marumi DHG Achromat 200 (+5) diopter

Started Mar 12, 2010 | Discussions thread
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bvphotos
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70-200mm f4 IS + Marumi DHG Achromat 200 (+5) diopter
Mar 12, 2010

So I just received my Marumi close up lens, which is a +5 diopter. I screwed it to the front of the 70-200 f4 IS lens, and everything is as clear as freshly dug up mud. The lens doesn't autofocus. Manual focus yields scarcely better results, and everything is badly out of focus throughout the focus range. I take off the Marumi, and everything is back to normal. The closeup lens by itself appears to be fine, as I can see through it clearly. So, am I doing something wrong, or is the closeup lens not meant for the 70-200 lens?

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Canon 5D, Canon 50D, Canon 100 f2, Canon 100-400 IS, Canon 50 1.4, Canon 24-105mm f4 IS, Canon 70-200 f4 IS, Tamron Pro 1.4TC, Speedlite 430EX, Feisol 3402 + Giotto ballhead.

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