drmike99 wrote:
I didn’t think FF was a requirement to eliminate
the AA filter. My D7100 is a DX and I am pretty
sure it has no AA filter.
You didn't read carefully. Read again "above
the
pixel density of 24mp FF".
Pixel density is not sensor size, and neither is
it pixel
count. When we say human population
per square mile, it's just a frame of reference.
It tells us how closely packed the people are.
But we could just as well refer to population
per square kilometer or per hectare, yet refer
to the exact same population density despite
different frames of reference.
OTOH, if the number of persons living in one
square mile are transplanted into one square
kilometer, the population density rises.
When you take 24 million pixels that were all
living on a FF sensor and transfer them onto
an APSC sensor, the
pixel density rises.
============================
FWIW, optional FYI stuff :-)
24mp FF is 4000x6000 pixels in a 24x36mm
frame. The pixel density is 6000 per 36mm
[linear], or 1000 per 6mm, or 166 pixels per
1mm. What's the pixel density of your D7100 ?
Easy enuf to calculate using the above model.
But without bothering to calculate, we can say
that a D7100 has 24mp stuffed into much less
space than a 24mp FF camera ... so clearly its
pixel density is higher than a 24mp FF camera,
so there'd be no problem eliminating the filter.