DavidBM wrote: Holger wrote: SoundHound wrote:
Be careful what you wish for. Fast lenses with minimum glass can weigh less but, typically vignette more or “It’s only F1.2 in the middle part of the lens.”
According to opticallimits the RF50/1.2 has 3.24 stops of vignetting at f1.2 - and it is not a small lens.
Yeah. Partly, I think, to record good resolutions figures in the corners wide open, though why you would care is beyond me.
I think high optical vignetting can help give high corner resolution figures.
But a pleasing look into the corners is surely more important, corner to corner sharpness can wait a few f stops.
But it's a brave company that makes a nice looking 1.2/50 that gives bad numbers in the corners wide open in order to have a nice look.
I Hope Sony is that company, but I doubt it.
I am sorry but I don't buy into these arguments: A brave company that makes a 50/1.2 with bad numbers. SO much nonsense here, lol.
DavidBM wrote: Holger wrote: SoundHound wrote:
Be careful what you wish for. Fast lenses with minimum glass can weigh less but, typically vignette more or “It’s only F1.2 in the middle part of the lens.”
According to opticallimits the RF50/1.2 has 3.24 stops of vignetting at f1.2 - and it is not a small lens.
Yeah. Partly, I think, to record good resolutions figures in the corners wide open, though why you would care is beyond me.
I think high optical vignetting can help give high corner resolution figures.
But a pleasing look into the corners is surely more important, corner to corner sharpness can wait a few f stops.
But it's a brave company that makes a nice looking 1.2/50 that gives bad numbers in the corners wide open in order to have a nice look.
DavidBM wrote: Holger wrote: SoundHound wrote:
Be careful what you wish for. Fast lenses with minimum glass can weigh less but, typically vignette more or “It’s only F1.2 in the middle part of the lens.”
According to opticallimits the RF50/1.2 has 3.24 stops of vignetting at f1.2 - and it is not a small lens.
Yeah. Partly, I think, to record good resolutions figures in the corners wide open, though why you would care is beyond me.
I think high optical vignetting can help give high corner resolution figures.
But a pleasing look into the corners is surely more important, corner to corner sharpness can wait a few f stops.
But it's a brave company that makes a nice looking 1.2/50 that gives bad numbers in the corners wide open in order to have a nice look.
I Hope Sony is that company, but I doubt it.
I am sorry but I don't buy into these arguments.
Feb 27, 2021 at 10:45 PM
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