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Re: DxOMark: Is the 75 1.8 the best m43 lens Available?
In reply to tt321,
4 months ago
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tt321 wrote:
Anders W wrote:
The MTF curves that DxO used to report in its stead did in many cases support the conclusion that MFT lenses on an MFT sensor do as well as, or better than, FF lenses on an FF sensor, at the same f-stop and with the pixel count held constant. The figures reported by LensRentals and Lenstip continue to support that conclusion.
When you said the same f-stop, did you mean numerically the same (i.e. F4 vs. F4) or same according to equivalent DoF?
I mean numerically the same. If we start talking equivalent f-stops, then things become a bit more complicated. If we compare equivalent f-stops from about f/4 or higher on MFT versus f/8 or higher on FF, I still think MFT stands up well. If we start comparing f/1.4 on MFT versus f/2.8 on FF (or f/1 on MFT versus f/2 on FF to take an even more dramatic example), then FF is likely to have the upper hand. Fortunately, however, many of the fast MFT primes do unusually well wide open, which reduces the shortcoming.
Pixel count held constant (I am assuming you mean the pixel count across the entire image, not per area) is no longer very relevant, unless and until we see future M4/3 sensors with 35+ MPs and assuming that FF will keep constant at current levels when that happens.
Yes, I mean pixel count for the sensor as a whole.
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