I whipped out my old P&S to take a picture of how i set it up, then tested my two lenes with and without using the magnifier

The setup

there's the board, the area I'm taking macro pics of is outlined in red

that's the best my 18-55 can do by itself (in this one i accidentally took a pick of the wrong one, but there the same size)

that's with the magnifier

that's the sad best my 75-300mm can do by itself

that's the best the 75-300 can do with the magnifier. i could have zoomed in more, but beyond that it was darn near impossible to focus, as it depends more on the positioning of the magnifier than anything else. it would of been easier with a better magnifier, as that one i got for free from work because of the fact that it was so hard to get to stay in the place you put it and nearly ruined a couple of one of a kind boards

