Are these lenses possible?

Started Jul 8, 2011 | Discussions thread
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stratplaya
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Are these lenses possible?
Jul 8, 2011

1. A micro/macro zoom lens. It seems all offerings from manufacturers are a fixed focal length. I don't count mid-tele zoom lenses where the maker attaches the label macro as the reproduction is not a true 1:1.

2. A zooming tele-converter. Same situation with these. They all offer a fixed percentage increase in focal length.

I'm just curious if there are physical or economic reasons why such lenses are not available.

Thanks,
SP

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