Frankie,
You will find it is easier to manually focus a 50mm f1.4 lens than a f1.7 or
f2.0.
The extra light makes a big difference in how clearly you can see to focus.
Otherwise, I think the lens qualities are similar at comparable apertures.
Regards, Bob S.
[EMAIL PROTECTED] writes:
<< I propose to buy a 50mm lens for general purpose. Would you give me any
opinion on the f/1.4 and f/1.7 lens?
In reality, I seldom use the aperture larger than f/2.0. So the f/1.4 and
f/1.7 have no difference for me. Rather, I wish to choose an optically good
lens. >>
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