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Old September 30th 05, 04:38 AM
Pete D
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"no_name" wrote in message
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John A. Stovall wrote:

On 28 Sep 2005 07:33:55 -0700, "Siddhartha Jain"
wrote:


Hi,

Given two lenses, one a prime (say 28mm) and the other a zoom (say
28-75mm) and both with an aperture of f2.8 -
- Will the prime be brighter than the zoom because it has fewer lens
elements?
- Will the prime be sharper wide open than the zoom at 28mm?

Ofcourse, a lot will depend on the particular makes and models being
compared but is there a rule of thumb?



Rule of Thumb: A prime at any focal length and wide open is better
than a zoom at any focal length wide open.


Except when it's not ... like a really well made fast zoom lens being
compared to a really poorly made slow prime lens.


So a Ferrari is faster than a Goggomobile, who'd of thought it??