Quote:
Originally Posted by MobileTechReview
Here in our office, all eyes are seeing significantly darker blacks but the background is just barely whiter.
On the Amazon forum there's a post where a fellow took it to a new and useful level and measured the display with a Datacolor Spectrocolorimeter (he inlcudes comparison with printed matter and the old DX). His findings show the blacks are quite a bit darker (nearing trade paperback print which is impressive) while the background is just a bit lighter.
He posted:
"Some reflectivity measurements:
Old (white) Kindle DX (6 months old):
white area density = 0.46, Lab = (65.8,-2.3,0.6)
black area density = 1.30, Lab = (26.6,-1.0,-2.2)
contrast in density = 0.84, contrast in lightness = 39.2
New (graphite) Kindle DX:
white area density = 0.42, Lab = (68.2,-2.4,0.9)
black area density = 1.58, Lab = (18.5,-0.1,-3.6)
contrast in density = 1.16, contrast in lightness = 49.7
trade paper: ink = 1.69, paper = 0.07 (contrast = 1.62)
new pulp: ink = 0.87, paper = 0.19 (contrast = 0.68)
old pulp: ink = 0.79, paper = 0.24 (contrast = 0.55)
I used a Datacolor Spectrocolorimeter model 1005. "Lab" is a color space measurement; the "L" stands for lightness--it matches the number on the box when you buy copier paper."
Here's the link: http://amzn.to/b7F8P5 |
That's some nice information, and pretty handy, and seems to mesh with what most people have been saying. I wonder what was displayed in the test. I suppose to get an accurate measure, a pre-made page of half-white, half-black would be ideal.
As I said earlier...darker blacks would make for interesting close-up photos, if anyone can get around to taking them. It'd be nice to see what is actually going on at the capsule size.