I would have thought this was easy to find an answer to but wasn't successful. I have a Raynox 6600 0.66x wide angle converter lens which has 58mm threads on the camera side and 72mm threads on the filter side. Used on my Sony DSC-H1 (a 5.1MP 1/2.3" sensor cam with 36mm-432mm focus range (35mm equivalent)), this gives me slight vignetting at the widest range.
Now I want better closeups, using closeup filter lenses (like, say +4 dioptres). Basically there are two questions:
a) is there any sense in using the wide-angle converter at all in this setup? b) if yes, should the closeup lens be for the 58mm end or the 72mm end of the wide-angle converter?
Since the whole point of using such a closeup filter lens is to be able to get near the object while still employing tele settings (which have a reach of about 1m which a +4 should allow me to shorten to 20cm), vignetting should not end up being a problem.
But I just lack the feeling of whether a 72mm +4 lens (which would then be usable only with wide-angle converter and be likely quite thicker or heavier) would make any sense at all or whether either way I should just go for the 58mm end.
EDIT: here are two photographs done without and with wide angle lens that made me think of possibly including it in the setup. However, it may be smarter to just use a stronger closeup lens instead. Though I'm not sure about the light yield. Also obviously the wide-angle converter poses more of a shadow-casting problem but that's a different issue.