We can zoom continuously from 18mm to 500mm with only three lenses; but are we missing something along the way?

Article Abstract:

Buying the right zoom lens depends on the quality and type of photos taken. The lenses ranges include 18-35mm, 24-70mm, 35-80mm, 28-80mm, 80-200mm and 70-300mm. There are wide angle, mid-range, and telephoto zooms, and they vary in close-up focus ability, quality and expense. Buying tips are given.

Purchasing, Zoom lenses

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So you think a 70-210mm zoom is 70-210mm, eh? Well, it isn't and few lenses are what they're marked

Article Abstract:

The focal length noted on camera lenses is not always accurate, but the lengths are within acceptable limits. Photographers should not be concerned with the difference in focal lengths when taking pictures, but should rather focus on their technique and quality.

Analysis

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Tamron didn't shrink any kids in error. It miniaturized a 28-200mm AF zoom instead

Article Abstract:

Tamron's compact 28-200mm AF zoom lens weighs only 15 ounces. Priced at $453, it has a double helical barrel that extends to 5 and 1/2 inches at the 200mm focus length. The maximum diameter is under 3 inches.

Evaluation, Tamron 28-200mm f/3.5-5.6 AF (Lens)

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