>For accuracy, 50% more pixels here yields only 21% more
>pixels in each dimension, so at best is an equivalent to a 21%
>"boost" in "reach" as defined by pixels
>across a target.
>
>I've never been a believer that denser pixels can be endlessly
>scaled up to replace focal length, so I added that "at
>best" part . I may be proven wrong, of course

I'm with you on that too Neil, I'd rather shoot the appropriate body for the subject whether it be Dx or Fx and crop using the Lens not the sensor...
Every Pixel is precious


Cheers jules...
tri-elmar-fudd
www.exaggeratedperspectives.co.uk