I thought i'd focus on that this week!!!
File Formats--> File formats come into play when the camera saves your image and again when you use image-editing software. May image-editing programs give you the option of saving your edited image in the programs own file format but be careful " the files may not be readable if you take them elsewhere for printing.
JPEG--> The most common file format saved by cameras , it's smaller files conserve space and save quickly but sacrifice some detail. If you plan to print photo's from your images, choose the highest-quality setting while shooting. JPEGs are the mos recognized format for pinting and sharing photo's.
TIFFS--> If you use image-editing software, it helps to save JPEGs and TIFF files before doing lots of editiing. Although TIFF files are larger and slower, an image saved in TIFF allows you to crop, eidt and save your image with losing image quality. Use it when you want to edit the image without losing data with each 'save'
RAW-->Some higher-end cameras offer RAW format, which takes data files directly from a digital camera's image sensors. RAW iamges are called "digital negatives" because you can take the RAW image and develop or edit it to create your finished photograph. These files are much larger and thus take more time to open and save, but you end up with high-quality images. You also will have to open RAW images with a special program, usually a plug - in for your image editing software.