Here's the two lenses with the 68mm of kenko tubes (and no macro lenses).


First the 50/1.8ii @ f/2.8. Tthe blurriness on the sides is field curvature (easily checked by focussing on the sides then the centre is oof, the blurriness in the '10' is because the ruler was slanted and the 10 was closer to the lens.


Other one is the 70-300L @ 70mm f/4.0. Looks better obviously, being f/4.0, darker because the flash wasn't in the best spot and i didn't care as long as i could read the scale.


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Man, that ruler is dirty.


More later, I got distracted by native wasps making a nest under my eaves, gotta go process the shots now...