On Sep 11, 2012, at 7:29 AM, Mark Roberts wrote: > > The Luminous landscape page is here: > http://www.luminous-landscape.com/reviews/cameras/nikon_d800_d800e_first_comparison.shtml > Scroll all the way to the bottom to see the final sharpened > comparison. The top image (D800E without AA filter) looks a hair > sharper -- but nowhere near enough (in my opinion) to show up in a > print. I also notice he rendered the non-AA image with a little more > contrast than the one from the camera with the AA filter; extra > contrast always gives a subjective impression of additional sharpness. > I brought them both into Photoshop and equalized the black and white > levels of both images; they were virtually indistinguishable at that > point. > > Mind you, I think Reichmann's right about moire being an > over-emphasized bogeyman. You might see it in fine weave like cloth > but probably only rarely then. I can't see car grilles ever being a > problem. At equal pricing I wouldn't hesitate to buy a camera without > an anti-aliasing filter. The K-5IIs is one hundred dollars more than > the K-5II; that's pretty close, so it all depends on how much you need > that hundred dollars to spend on something else ;-)
It would be an interesting experiment to specifically try for moire. I'd print a target with various line spacings, and knowing the resolution of the sensor, I'd know where moire should be a visible effect. I'd take photos with the camera a bit closer than it should be noticeable, at a range of f-stops, both hand held and on a tripod. Move the camera back and repeat. It would also be interesting to try the same experiment with red, blue and green lines on white and on black. I doubt that it would show much of any practical use to photographers, but I do think it might be an interesting demo for high school science students. What I bet it would mostly show is the effects of diffraction. I wonder if it would also show the effects of diffraction being different at different wavelengths. -- Larry Colen [email protected] sent from i4est -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
