User:Materialscientist

This user is an administrator on the English Wikipedia. (verify)

This user is an administrator on Wikimedia Commons. (verify)

This user contributes using GIMP.

en-4	This user has near native speaker knowledge of English.

ru-4	Этот участник владеет русским языком почти как родным.

nl-3	Deze gebruiker heeft gevorderde kennis van het Nederlands.

fr-1	Cet utilisateur dispose de connaissances de base en français.

es-1	Esta persona tiene un conocimiento básico del español.

My activities here change with time. I improve images and can remove watermarks, clone parts of the image and reduce regular noise (FFT filtering); I also draw crystal structures from CIF files and can provide CIF files for many solids. More information can be found on my en.wiki user page. I review and tag newly uploaded images for copyright violations – please don't take it personally, copyright rules are difficult and often annoying; they differ across various wikis and other websites, but we must follow them. I used to be fluent in Dutch and could speak some French and Spanish, meaning I can still understand a bit of these and a few other European languages, but I will probably reply in English.

Useful Commons-related links

Copyright tags
Currency
CommonsDelinker log
Flickr upload script
Flinfo - extracts metadata from flickr/paniramio/picasa/etc images
Hirtle chart (US copyright), URAA
Move from wiki to Commons
Stamps
Threshold of originality
Validator (SVG images)
Manual cleanup of SVG code

Where to look for free images (not all are free)

Africa photos {{PD-USGov-USAID}}
ANEFO (sub-collection of Dutch archives) {{Cc-by-sa-3.0-nl}}
Bundesarchiv {{Cc-by-sa-3.0-de}}
FilmiTadka (license)
Flickr; Channels: NASA, Smithsonian
Gallica {{Creator:Agence Rol}} {{Creator:Agence de presse Meurisse}} {{PD-GallicaScan|IFN-90477371}}
Geograph Britain and Ireland {{Geograph}}
Geograph Channel Islands
Geograph Deutschland
Getty images Mondadori {{PD-Italy}} Asahi {{PD-Japan}}
Ipernity
kremlin.ru {{Kremlin.ru}}
Library of Congress {{LOC-image}} {{PD-Van Vechten}}
MFO (mathematicians)
mpdi.org open access journals
NASA {{PD-USGov-NASA}}
National Institute of Health {{PD-USGov-NIH}} http://ihm.nlm.nih.gov/images/B014364
Panoramio
Picasa
PLos journals
Smithsonian collections
Stora Grabbarna (Swedish track athletes) {{PD-Sweden-photo}}
Time Magazine (before 6 July 1936) {{PD-US-not renewed-TIME}}
Wellcome Images {{Cc-by-4.0}} http://wellcomeimages.org/indexplus/image/V0002373.html
USGS {{PD-USGov-USGS}}

Flickr image info.	License	OK here?
© All rights reserved	Copyrighted	NOT OK
Some rights reserved	CC-BY-NC-ND	NOT OK
Some rights reserved	CC-BY-NC-SA	NOT OK
Some rights reserved	CC-BY-NC	NOT OK
Some rights reserved	CC-BY-ND	NOT OK
Some rights reserved	CC-BY	OK
Some rights reserved	CC-BY-SA	OK
No rights reserved.	Public Domain	OK