vscd said:Then I suggest you try a 50mm macro lens that focuses to 1:1, without an extension tube and compare the reading on your camera with that you get from a 50mm macro lens that focuses to 1:2, with the addition of an extension tube. Seeing is believing I guess ...
I really would like to try that if I had something uselessfull like a 50mm Makro 1:2. BUT. Both lenses would be focused to the closest point to get to their maximum magnification. Both would be set to an equal f-stop (and focal length of course) and both would be handled with the same sensor-sensitivity. So I doubt any difference between the shuttertimes. Doesn't sound to compelling to me. Maybe I'll find an old 100mm Macro with anything like 1:2 and compare it to the 100L with 1:1.
Maybe.
I saved you the trouble and did the test. Maybe it will help you.
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