On Oct 24, 1:37 pm, "David J Taylor" -this-
bit.nor-this-bit.co.uk wrote:
RichA wrote:
On Oct 24, 11:33 am, "David J Taylor" -
this-bit.nor-this-bit.co.uk wrote:
RichA wrote:
http://www.dpreview.com/reviews/canoneos40d/page26.asp

.. as would be expected simply due to its weaker anti-aliasing
filter.

David

That's what the site speculated caused it. Good thing is, of the
shots someone will take, it is likely few will be effected by a slight
increase in moire, but all will benefit from an increase in resolution
and sharpness.

No, it's false sharpness. Once the higher spatial frequencies have been
aliased down to lower, more visible frequencies, no amount of
post-processing will remove the damage done without causing serious
degradation of the image. It can also be one of those subtle effects
where you look at an image, and know something is wrong with it, but can't
quite put your finger on it.

Just say "no" to poor anti-alias filters!

David

How do you know the sharpness is "false?" If more real detail is
visible, it isn't just a ragged contrast effect, it is higher
resolution.