Canon 50 1.2 vs. 50 1.4?
- Canon Lenses
- 67 Replies
"He" is not a 'he', of course in this new non binary world that doesn't mean, given the statement "It's not "he"", we should assume they are a she...Don Haines said:privatebydesign said:Canon said their 300 f2.8 from ages ago is faster to focus than the 100 f2, why would they lie? Subsequently they have made better bodies with better algorithms and better lenses that also focus faster. There is no way on this earth that the 100 f2 focuses faster than those more modern lens on bodies designed for them.
WAIT A MINUTE!
Are you saying that a high end 2010 lens focuses faster than a 1991 lens! Who would have thought so!
In this case, he might be right though.... a 100F2 has considerably smaller lenses than a 300F2.8. Since the AF motors have about a quarter as much mass to move, despite older tech and poorer algoritms, it is a possibility. Even so, it is comparing apples to oranges and not a very valid comparison.....
Just because the primary optic is very different in size doesn't mean the focusing elements are, don't forget they are both internal focusing designs and as such that focusing group is designed to be in the optimal area of the light path to maximize efficiency both in size and weight. Focus speed certainly isn't a simple function of lens size, if it were the 400 f2.8 and 600mm f4 would be amongst the slowest to focus, and clearly they are not.
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