ClarkVision.com

Home Galleries Articles Reviews Best Gear Science New About Contact
balanced-rock-arches-rnclark-105mm-c05-03-2019-IMG_6379-6415.g-c1-1500s.jpg
                                                   is Copyrighted by Roger N. Clark, www.clarkvision.com
Star Clouds of the Milky Way Above Balanced Rock, Arches National Par

New Article: ETHICS in Night Photography

Featured: 35+ Part Series on Nightscape and Astro Photography

All images, text and data on this site are copyrighted.
They may not be used except by written permission from Roger N. Clark.
All rights reserved.


Images on this site are best viewed with proper monitor calibration.
Adjust your monitor brightness and contrast in the above test strip
so that you can see all 17 levels and so the
left end appears black and the right end appears white.

Roger N. Clark's Email (is encoded to reduce spam):
rnclark at the server clarkvision.com or mail.clarkvision.com


This site is averaging more than a million hits, several hundred thousand unique visitors, and hundreds of gigabytes of information transferred per month.

Share of operating systems accessing this site:

                 December  December  December  December  December  December  December  December  December  December
                   2009      2010      2011      2012      2013      2014      2015      2016      2017      2018
Windows            79.8 %    74.2 %    65.6 %    55.7 %    40.4 %    49.2 %    44.0 %    45.7 %    47.5 %    47.1 %
Linux               9.7      12.9      17.3      18.9      16.2      14.2      18.4      18.6      17.7      17.9
Android (Linux)     0.1       0.6       1.1       3.2      13.1       7.2      10.4      11.2      12.1      13.6
Mac     (Unix)     10.1      10.6      11.3      10.7      11.8      15.6      13.1      12.2      11.4       9.8
Ipad    (Unix)      0.0       0.8       3.4       8.7       6.8       8.4       5.4       6.4       4.8       4.6
Iphone  (Unix)      0.3       0.9       1.3       2.8      11.7       5.4       8.7       5.9       6.4       7.0

Home Galleries Articles Reviews Best Gear Science New About Contact

Web Presence Since 1998.
This Page last modified May 10, 2019.
Last updates to pages on this site: May 16, 2019 (See: Press releases under about; New articles Recently Added or Updated.)
Last Photographs added to this site: May 16, 2019. See: NEW Images Recently Added