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09-11-2007, 04:50 PM   #1
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Macro Zoom

Why do some zoom lenses say 'macro zoom' and others don't? Can I use a 'Macro Zoom' for anything other than smaller objects at a distance? I realy am new and am learning this stuff...thanks!!...Jim

09-11-2007, 05:15 PM   #2
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Typically they are a zoom lens that offers "close focusing" at the long end of the zoom providing 1:2 or 1:4 magnification, not true 1:1 (some do, most don't)

In all other ways, they are typically just a regular zoom lens... no restrictions on what you can take with them
09-11-2007, 06:05 PM   #3
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Just what he said - means it can focus fairly close if you want it to.
09-11-2007, 09:06 PM   #4
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would that make them better lenses (glass) you think, I assume it depends on the quality of build...thanks


Last edited by Jimsi777; 09-11-2007 at 09:44 PM.
09-12-2007, 02:26 AM   #5
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QuoteOriginally posted by Jimsi777 Quote
would that make them better lenses (glass) you think, I assume it depends on the quality of build...thanks
I don't think there is a definitive answer about "better glass" and macro capability.

The only real issue is, in my view, that there are some trade off's in the focusing mechanism when you allow closer focusing. on many lenses especially manual ones, you have a limit in terms of how many degrees the focusing collar turns. Lets, for example that you are limited to 270 degrees, if you have to cover from close focus to infinity, it may mean that you have less degrees of rotation for normal focusing and the focusing is less precise. SOme lenses (Vivitar Series 1 70-210mm First version) have a separate mechanical switch for macro, that changes the internal lens arrangement (spacing) to give you the best of both.

On autofocus, you may also find focusing takes longer, because the lens could hunt through a wider focusing range.
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