Geograph - photograph every grid square

It depends on how closely your painting resembles the photograph. I can't see any problem with using the information gleaned from any Geograph picture to inspire your painting. On the other hand, if you were to trace the photo and paint it over, you should credit the photographer for their contribution.

If you are in any doubt, just email the contributor (there's a link under the main picture) and ask them; I'm sure most will answer in the same way. You could offer to take a photo of your finished painting and send it to them as a thank you - many would appreciate that.

All photos are Creative Commons (CC) licensed. That means you can use them for free for any purpose as long as you credit the photographer individually and state the fact that the image is CC-licensed. You can find suggested wordings for both print and electronic publications if you click 'reuse this picture' under the photo description on each photo page.

If you need a higher-resolution version, there may be a CC-licensed version available by clicking the 'more sizes' link (if present) to the top right of the main photo. Alternatively, you can contact the photographer through their profile page (click their name on the photo page to get there) and ask if they are willing to give or sell you a copy under a separate licence.

The Creative Commons licence applies to the text supplied with a photo as well as to the photo itself.

If you are copying their text, it should be credited.

(Asked by robinstott and answered by barryhunter on the forum http://www.geograph.org.uk/discuss/index.php?&action=vthread&forum=18&topic=13068&dontcount=1&page=0#1 )

By uploading an image to Geograph, you agree to license it under a Creative Commons licence. This allows anybody to use your image for any purpose, including commercial use, as long as they give credit to you. They don't have to ask your permission before doing so.

The standard 640x640 pixel size is too low resolution for the vast majority of commercial uses, and it is not uncommon that Geograph-ers are approached by publishers or the media for a higher-resolution version for printing. If you agree to supply one, you can ask for a fee if you like. Basically, you're granting them a separate licence to use another (higher resolution) image. It is up to you to negotiate the licence terms and remuneration you want.

Of course if you choose to license a higher-resolution version under the CC licence alongside the standard size picture, then people are free to use that as well.

Many Geograph-ers are happy to give high-resolution versions for free for charity or community publications while charging a commercial fee from other organisations. Commercial providers of education (materials) seem to be a borderline case for many.