unit 35

Images can use two different types of colour model palettes, RGB (red, green, blue) and CMYK (cyan, magenta, yellow, key which stands for black). RGB is used mailing for uploading photos to the internet so it is a good idea to make sure that when creating an image in photoshop for example that you use RG  colour mode. Although RGB is mainly used for internet use, it is also used for coloured television and digital cameras. CMYK is generally used for printing as it has a wider range of colours so tends to look better and higher quality when printing images, this helps when showing a client some work so it looks as good as possible. CMYK uses a four step printing process, when printing an image, it will print the image four times, one in each colour, the colour from these prints then mixes together to create the desired colours. Some design software such as photoshop will have a swatch tool, this will allows the user to match the colour from the design to what it will be when printed.  Most image files can be quite large, so to reduce the size of the file then it is best to save the file as a JPEG or PNG file (these reduce the amount of megabits required).  The problem with compressing an image is that it reduces the overall size of the image which some websites may require you do but you risk ruining the quality of the image, this is especially noticeable when you make an image larger as it becomes pixalated. This is because since there are less megabites, they have to stretch to make the image larger so the pixels in each megabyte has to spread all the data out further making it appear more square, and lines don't appear as smooth as they should be. A good example of this is old fashioned computer games such pac-man, in the original versions instead of being a circle the curve is made up of little squares instead of a smooth curve. One more factor when printing off work is the DPI setting, DPI stands for dots per inch, (dots being pixels). 200 DPI is the recommended minimum setting for a good quality image. Finally we must talk about the copyright issues of photography. There are five points that I will list so that you understand the copyright laws.

1. Who owns the copyright on photographs?
The photographer owns the copyright on any photo that they have taken unless they work for a company and they take a picture for them on their behalf then the company that the photographer works for will own the copyright to that particular photo. The other way that the photographer wouldn't own the copyright would be if they sold their work to another party, then that particular party would own the copyright of that photo. No matter what, if it is any other case then the photographer who took that photo will own the copyright to it.
2. Copyright registration.
You're probably thinking why register? Well this is a simple answer. If someone else or another party tries to steal your work and you want to sue them for copyright, if you have registered then you have the proof to show that its your work. You can also submit loads of photos and only pay a single fee so if you want your work protected then it's really worth it.
3. Using the work of others
No matter what work you want to use that belongs to someone else, be it a font style, an image or a piece of writing you should obtain permission from the owner to use it. You should also be prepared to pay a fee of some sorts because its very unlikely that a copyright owner will let you use their work for free when they have put all the effort into doing it. A copyright owner can refuse to let you use their work for any reason, no matter how silly it may be. It's their work and if they don't want you using it then that's final.
4. Marking your work.
If you're a photographer and you submit work to a company and then people call that company and ask to use a certain photograph and it isn't makers then they won't know what to tell that person calling up as they won't know who has submitted it. You should also place a copyright notice on your work so that people know its copyrighted. Doing this will help to deter infringement. If you are uploading a image to the web and you wish to copyright it then you should just edit it in Photoshop and place a copyright notice on it.
5. Model release forms
An individual has certain rights to control how their image is used. This varies from country to country depending on laws. The general rule is to protect from defamatory or to use the image as something offensive.