MichaelHodges said:
jrista said:
As for photographers, if you think the removal of an AA filter is better than oversampling, then yes, I absolutely DO BLAME YOU for forcing a ludicrous trend on camera manufacturers.
So rather than removing obstacles to improve detail and simplifying, you want to convolute the process?
Your an idiot if you think a lower resolution sensor without an AA filter is ever, even remotely, going to be better than downsampling an oversampled image that doesn't NEED an AA filter (because by oversampling, you ARE anti-aliasing!)
As for sharpening soft images...are you refuting the claim that you can restore detail by sharpening? Seriously?! I've proven this case so many times before, do I really, truly, need to prove it again?
In my response, I claimed that soft images can be sharpened. But the problem with soft images is they are much less malleable than sharp, clean images out of camera.
The better the sensor, the less post processing you have to do.
I'm not sure there is any actual evidence for that. And again, I'd point you to all the artifacts that occur with sensors that lack an AA filter entirely. You could spend DAYS trying to correct moire or extensive aliasing in an image, and still never get rid of it. As for a sensor with an AA filter...run it through a light sharpening filter and your done. Maybe that's 5 seconds of additional processing...ooh, that's just so much time. In the grand scheme of things, I'd say that you still have to spend time sharpening an image without an AA filter...you just use less sharpening. So there really isn't any major difference in processing time period.
Now, regarding oversampling. You seem to be misunderstanding that. A sensor that oversamples lenses, at their best resolution, say f/2.8 as a round-about high quality aperture for lenses the likes of the Otus. You still wouldn't have an AA filter. However, you wouldn't NEED an AA filter, because your anti-aliasing by oversampling. You do understands what that means, right? A sensor that is capable of oversampling is going to be of MUCH higher resolution than any sensor that isn't oversampling and lacks and AA filter.
So...where, exactly, is your lower resolution AA-less sensor actually getting higher IQ than a high resolution oversampled sensor? The higher resolution sensor, even it it may look "soft" at 100% pixel peeping, is STILL resolving FAR more detail than the lower resolution sensor that lacks an AA filter. You want a sharper image? Well, if your 2x oversampled, downsample by a factor of two (reduce it to 1/4 area). If your 3x oversampled, downsample by a factor of three (reduce it to 1/9th area.) The oversampled image will be sharper, out of camera, without any sharpening or noise reduction, than the lower resolution image that did not have an AA filter.
When it comes down to sensors at today's resolutions, I'll take the one with an AA filter over one without an AA filter any day. It might take me an extra five seconds to dial in a slightly stronger amount of sharpening than one without an AA filter, but at least I won't have to spend an extra day trying to get rid of aliasing and moire.
