Question on zoom lens ranges.

jwbryson1

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Historically, how have lens manufacturers chosen the ranges (the minimum and maximum lengths) for their zoom lenses? Is there a specific reason for the lengths?

For example, why choose to manufacture a 24-70mm lens? Why not make it 18-72mm, 20-100mm, 120-300mm or some other range?

I suspect there is a reason for this but I don't know what it is. Just curious.

Thanks.
 

Derrel

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Yes, there has been a general reason for the lengths of zoom lenses. Here's an excellent article on the "why fors" (lol).


Lens Genealogy « Canon Rumors

Scroll down to the last few paragraphs for some simple, basic reasons on why "most" zooms have fallen into predictable, similar focal length ranges.
 

Destin

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Sigma makes a 120-300 ;)
 

nmoody

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Yes, there has been a general reason for the lengths of zoom lenses. Here's an excellent article on the "why fors" (lol).


Lens Genealogy « Canon Rumors

Scroll down to the last few paragraphs for some simple, basic reasons on why "most" zooms have fallen into predictable, similar focal length ranges.

Absolutely fascinating! Thanks so much for sharing this.
 

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