>I have a set of these, but never use them. They don't fit the filter >sizes of my current lens stock. I had also read they add more glass >to the optical path and that's usually not the best thing. I have no >experience in that fact. I see a lot of images with a tc mentioned, and >they look sharp to me.
Look in John Shaw's book sometime. The better achromatic close-up lenses (Nikon, Canon, Leitz, Minolta) deliver top-notch sharpness. His pictures using them have been published in the top nature mags.
>I also have an extension barrel, a loss of light, but no more glass. I >have experimented with it, but the working distance can be extreme. >I have laid in dirt to get to a tiny flower before.
>The lens I purchased gives me a 1:1 without any accessories and I am >hopeful to get better working distance and not have to add anything >to my light path.
For a greater working distance, get the doubler.
--- Luis
Take care,
Gregory david Stempel
FIREFRAMEi m a g i n g
