Resolution shows how many megapixels there are in an image. The higher the resolution the higher quality. 1080p is considered HD, and 2k / 4k are considered 'ultra' HD. If there are less pixels the image will be less smooth and be blocky or blurred. The best PPI to print at is 300. The higher PPI the higher quality the image will be.
While higher resolution does look a lot better on larger screens, if you look at higher quality images on a smaller screen or player (e.g. turning a youtube video onto 1080p but not putting it in full screen) it can cause jagged edges and an image which looks very rough.
RAW vs JPEG:
While higher resolution does look a lot better on larger screens, if you look at higher quality images on a smaller screen or player (e.g. turning a youtube video onto 1080p but not putting it in full screen) it can cause jagged edges and an image which looks very rough.
RAW vs JPEG:
RAW photographs have less contrast, look more washed out and are less saturated than JPEGs. They are also not suitable for printing straight from the camera. JPEGs are sharper than RAW images. Having shot with a camera that takes RAW images, i often have to increase the contrast and levels in post in order to get a better looking image. RAW file sizes are also much larger than JPEGs, meaning more photos can be taken when using JPEG. Shooting in RAW also means that you can correct mistakes once they have been imported into a computer easier than when using a JPEG, meaning you have much more control over how your image looks.
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