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Rumors Panasonic announcement on October 17th

ermesjo said:
Interesting what you describe here, that the limit is 44-47MPix, and that the S1Rii have 44,3MPix. Will this physical fact regarding the 24x36mm format mean that any camera with sensors above 44-47MPix cannot resolve particular better? Also, your description of difraction.
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I and a number of other members don’t agree with @Babylonia’s claim that diffraction is worse on higher Mp sensors. There is a long discussion about it earlier in this thread.
 
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pdk42 said:
I and a number of other members don’t agree with @Babylonia’s claim that diffraction is worse on higher Mp sensors. There is a long discussion about it earlier in this thread.
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I don't remember ever seeing anything to indicate that diffraction would be worse on higher MP sensors, though I suppose if you looked at it at 100% then it would seem softer than a non-diffraction-limited image on the same sensor.
 
Jonathan-Mac said:
I suppose if you looked at it at 100% then it would seem softer than a non-diffraction-limited image on the same sensor.
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Yes, it would - but is this what you meant to say? It's sort of a "by definition" point.

Perhaps you meant "if you looked at a small f-stop shot at 100% on a high MP sensor it would seem softer than if you viewed it on a lower Mp sensor". If so, then that's also true - but only because of the higher magnification when viewing at 100%
 
pdk42 said:
Yes, it would - but is this what you meant to say? It's sort of a "by definition" point.

Perhaps you meant "if you looked at a small f-stop shot at 100% on a high MP sensor it would seem softer than if you viewed it on a lower Mp sensor". If so, then that's also true - but only because of the higher magnification when viewing at 100%
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Viewing at the same size they would look the same and would any softness from diffraction be discernible at all at apertures larger than around f/11?
 
Jonathan-Mac said:
I don't remember ever seeing anything to indicate that diffraction would be worse on higher MP sensors, though I suppose if you looked at it at 100% then it would seem softer than a non-diffraction-limited image on the same sensor.
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If you are talking about the exact same sensor with different f-stop (higher f-stop -> more diffraction), than the picture with more diffraction could be the overall sharper picture because of more depth of field.
 
Jonathan-Mac said:
Viewing at the same size they would look the same and would any softness from diffraction be discernible at all at apertures larger than around f/11?
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Assuming sufficient resolution for, say, about 150lpm on the final image, the Mp count of the sensor is irrelevant to diffraction effects so long as the image is viewed at the same magnification. As to whether diffraction significantly softens the image, it seems on FF that f8-f11 is generally the limit. On m43, take two stops off that (f4-f5.6).
 
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