Re: Sensor resolution, any sites with actual measurements?

Unless there is an uncommon amount of crosstalk, most CCD chips come close to their theoretical capability, which is about 0.7 of the line frequency of the detectors. That is, if there are 100 detectors per mm, then the chip will usually test out at about 70 lines (35 lp) per mm. While the mtf curve for a discrete sensor is shaped a bit different than for a scanning sensor (Kell factor), the curves are close near the cutoff frequency or the 2% contrast point.

Rich wrote:
I'm not talking about sites like dpreview.com that might be testing
sensors with less
than perfect lenses that happen to be used with some cameras. What I
mean are sites that have done tests with lenses that resolve (clearly)
beyond the sensor's capability.
No Canon 5D shots with wide open WA lenses, or related horrors.
I'm curious about how (for e.g.) the resolution of a FF camera compares
to cameras with smaller sensors, to see what effect pixel size (as
opposed to pixel count) has on absolute resolution, if any. I know its
not possible to avoid in camera processing which varies from brand to
brand,
but you have to start somewhere.
My preconception (correct by Mr. Roger Clark) was that pixel counts
determine absolute
resolution. The more pixels you can use to image something, the more
detail you will see.
But this seems to vary due to a lot of other factors.
-Pixel count
-Pixel size
-lens quality
-in-camera conversion and processing
-in-camera sharpening
-post camera processing
Even the image (it's characteristics) will effect different sensors
differently.

.

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