Siddhartha Jain wrote:
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
- 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?
In a word NO. At least it is no if you are talking about real life
However ---- In general primes will be sharper unless the zoom is a
much better quality lens. Of course that is possible and a really good zoom
can outperform a poor prime any day.