Shot at f/1.4 ... curious how the acutance / aberrations (quid pro quo) change for each when shot stopped down. Does the gap narrow or widen when shot at say f/4?
That, and wondering how / if there are any focus shift issues when stopping down to say f/2 or f/2.8?
Imo, there are so many quid pro quo aspects to optics that a single image comparison may yield a false sense of equity, if you haven't found the achilles heel vs. sweet spots for each, and consider where they are optimized (near / portrait / distance), et al.
That said, I appreciate the point folks make when they suggest that "nearly the same" for "less money" ... just that other aspects should be understood / revealed. Of course, this is a great reason why we love Fred's reviews.
Apr 30, 2026 at 08:37 PM
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Shot at f/1.4 ... curious how the acutance / aberrations (quid pro quo) change for each when shot stopped down. Does the gap narrow or widen when shot at say f/4?
That, and wondering how / if there are any focus shift issues when stopping down to say f/2 or f/2.8?
Apr 30, 2026 at 08:28 PM
Previous versions of RustyBug's message #17029995 « Which one looks better? »
