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General Photography
Project 365 & Daily Photos
Moab Man's Magnified Macro
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<blockquote data-quote="Vincent" data-source="post: 436267" data-attributes="member: 15675"><p>Normally they use one of 2 ways to describe the strenght of close focus lenses:</p><p></p><p>+2 diopters or 500 (=1000/2)</p><p>+4 diopters or 250 (=1000/4)</p><p></p><p>Generally they are used differently +2 for telephoto lenses and +4 for normal lenses, but there is no real restriction.</p><p>The 250 should focus at about 250mm and the 500 at 500mm.</p><p></p><p>The Canon 500D has double lenses to be optically as neutral as possible.</p><p>I`m planning on using it on the 70-200mm with a TC maybe.</p><p></p><p>It seems Raynox uses a completely different description.</p><p>DCR250 is +8 diopter, single lens, I found. Clearly Moab man is proving it really works if you put your mind to it.</p></blockquote><p></p>
[QUOTE="Vincent, post: 436267, member: 15675"] Normally they use one of 2 ways to describe the strenght of close focus lenses: +2 diopters or 500 (=1000/2) +4 diopters or 250 (=1000/4) Generally they are used differently +2 for telephoto lenses and +4 for normal lenses, but there is no real restriction. The 250 should focus at about 250mm and the 500 at 500mm. The Canon 500D has double lenses to be optically as neutral as possible. I`m planning on using it on the 70-200mm with a TC maybe. It seems Raynox uses a completely different description. DCR250 is +8 diopter, single lens, I found. Clearly Moab man is proving it really works if you put your mind to it. [/QUOTE]
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