Subject: EOS Re: Extension tubes
> There is an article where the author did some tests and found that 2-element diopter lenses produce better quality images than do extension tubes. > > http://people.smu.edu/rmonagha/mf/diopter.html > > There is a rebuttal to the test on the same page, so opinions may still vary. Personally, I plan to buy diopters but only because I would be using it on a zoom lens and I have read John Shawn and others state that zoom+extension = hard-to-use > As you mentioned, opinions vary! I find extension tubes pretty handy with a zoom lens. You can use the zoom to change the magnification ratio. When using a good quality fixed lens the image degration is negligible. Of course image degration is a bigger concern with zoom lenses+extension tubes vs. fixed lens+extensions, and one should judge his needs and requirements and make the desicion based upon those factors. My advice: if you can get the extension tubes at a good price, grab them. You can't go much wrong and you can always sell them (almost?) at the same price you paid if you don't like them. Best Regards, Olli _________________________ A man's gotta believe in something. I believe I'll have another beer. * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
