View single post by jk
 Posted: Sun Nov 19th, 2017 11:28
jk



Joined: Sun Apr 1st, 2012
Location: Carthew, Cornwall, United Kingdom
Posts: 6829
Status: 
Offline
I got this from Iliah Borg of RAWTherapee fame.

What we have from Nikon:

"Seamlessly switch between RAW sizes of Large (45.7 MP), Medium (25.6 MP) and Small (11.4 MP)"

This translates to:

Nikon specs:

L: 8,256 x 5,504 pixels

M: 6,192 x 4,128 pixels

S: 4,128 x 2,752 pixels

Reality:

L: 8,288 x 5,520 pixels

M: 7,104 x 4,728 pixels

S: 6,216 x 4,136 pixels

How it happens:

- first, the raw data for M and S is resampled in the camera, to get 7,104 x 4,728 and 6,216 x 4,136 from 8,288 x 5,520;

- next, it is resampled in raw converter software, to get 6,192 x 4,128 from 7,104 x 4,728, and 4,128 x 2,752 from 6,216 x 4,136.

M and S formats contain bayer pattern, not YCC data, as it was with previous sRAW format.

PS. This is not the first time Nikon are underreporting the number of pixels, same happened with D1x (and in a way, with D1 and D1h too).



____________________
Still learning after all these years!
https://nikondslr.uk/gallery_view.php?user=2&folderid=none