I just tried to explain that there may be better combinations that may give better results; I do not to what extent using a close up lens in combination with a lens that has not been designed for close up focusing may affect quality, also some lenses may have quite heavy CAs on their own, so the close up lens will make they worse.rjlittlefield wrote: To be clear, I chose that particular combination because it was the closest I have for answering the question that anvancy
According to photozone.de this 55-200 has pretty heavy CAs (if it is the one)
http://www.photozone.de/canon-eos/193-c ... ew?start=1
My first serious introduction to macro was with EOS 40D plus CANON 100/2.8 Macro USM and raynox, but the truth is that I never got to do stacks with them. I tried once the DCR-250 plus 100/2.8 macro combo on a 5D and the results were very bad outside the center of the image, with heavy aberrations
If avancy has no macro lens and budget is limited I would suggest to buy a canon 100/2.8 USM second hand, which can be pretty cheap, or an old manual focus macro lens like the nikkor 105/4, tokina 90/2.5 etc... The things I like about the canon is that it does not change the length of the lens as you focus and a tripod collar can be used (10$ on ebay) which allows vertical framing. This would give from infinity to 4:1
Getting the MP-E straight away without owning a proper macro lens first miught not be the best choice; for a full frame camera I would recomend the MP-E for sure but for APS-C cheaper alternatives might do the job
regards
Javier