Robert Meyers wrote on 26/03/2004 08:53:30:
> I was wondering if people know how severe the differences in quality will
be
> between these two lenses? The long end is my most important.
The MTF charts for the lenses (along with other information)
are available from Canon's USA site:
http://www.usa.canon.com/eflenses/lenses/ef_70-300_45/ef_70-300_45.html
http://www.usa.canon.com/eflenses/lenses/ef_300_4/ef_300_4.html
Now Canon MTF charts are 'predictions' and not measurements
but the prime is clearly better at 300mm.
Having said that, I consider that these two lenses serve very
different purposes. The zoom is less than 10cm long and weights 720g.
The prime is over twice the length and another 500g. It's thus
perhaps no surprise that the faster prime is better optically.
The zoom is ideal for travel (or other situations where weight
is a concern) and is also less conspicuous. The prime excels
where optical quality is the overriding concern.
Stuart
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