DavidBM
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httivals wrote:
‘Generally speaking when you have a wider aperture lens, it allows the optics design to be such that it’s going to be sharper, especially when you start stopping down..’ Art of Photography guy
While the above may not always be true, it often is. Roger Cicala at lensrentals had several posts about a month back where he tested fast aperture lens stopped down and they performed better, as I recall, than slower lenses that weren't stopped down as much. I may be misremembering slightly so you should check them out if you're interested.
I was actually surprised be the lensrentals results, because I had always believed another truism - that if you have a slower lens you can design it to perform better stopped down compared to the faster lens because you don't have to go through the compromises of designing a fast lens....Show more →
Both true, oddly.
The reason is that slower lenses are usually budget lenses, and fast ones get every optical trick in the book thrown at them!
But when you make a state of the art slow lens, it can be remarkable. And we all know when you make a budget fast one it usually.......has character.
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