MDM Posted February 7, 2020 Share Posted February 7, 2020 (edited) On 07/02/2020 at 15:48, Klinger said: Can you explain tunnel effect please. Do you mean when adding to the front of the lens, instead of tubes to the back of the lens? I have the 58mm version the old 100mm macro Canon. Deleted According to Harry's post, that lens will work with a step down ring and extenders in front of the lens. I have a Tamron 90 macro lens with 58mm thread which I will be checking out. At the moment it won't focus close enough. I will know a lot more when the boat arrives from China with the extenders that go in front of the lens and will report here. Edited February 19, 2020 by MDM Link to comment Share on other sites More sharing options...
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