Saturday, August 1, 2015

Google+ Follower Count vs. Time

I began informally recording my Google+ follower count in June 2013 when it reached 9,000.  Below, is a plot of these values from 6/13/2013 through 8/1/2015.

Here are some observations:

• The plot is comprised of 2 fairly linear segments

• The slope sharply decreased circa December 2013, likely due to Google engineers tuning their social networking algorithm parameters.  Suddenly, gaining new followers on Google+ became much more difficult.  I call this early period its 'inflationary' period after the inflationary epoch in Cosmology/Big Bang, during which the Google+ team was trying to rapidly increase its user base.

• The slopes are fairly constant in spite of large variations in post frequency and post popularity (one of my posts had almost 300,000 views April 5, 2014, but can you see a jump in the plot?)

#googleplus   #algorithm   #socialnetworking  

Thursday, July 9, 2015

Too many pixels = reduced low-light performance

Initial test results are in, and as I feared in an earlier Google+ post (, the new 50 MP Canon has less than stellar low-light and signal-to-noise-ratio performance. &nbs p;Also, I am very skeptical that any glass exists which is capable of truly resolving detail to the single pixel level, let alone having the ability to focus great g lass to its maximum sharpness.  Therefore, I don't see any practical reasons for manufacturing such high pixel count cameras, marketing reasons aside.  The only way I can see that high pixel counts may also offer solid low-light performance is for sensor designs which do not use Bayer arrays which inherently waste phot ons and blur detail over approximately a 2x2 pixel area.  On the other hand, if truly great glass were available, and one planned to primarily shoot in bright l ighting conditions, then this camera might be the right choice under these circumstances.

< /span> DxOMark Canon 5DS Results