Subtitles of the Movie

Ok you have heard me say a million times that when you are taking your digital photographs or you are doing your scannings, save them in as a TIFF file. Okay, that is very important because a TIFF file is a lossless compression algorithm, meaning that all of the color information that is captured in the scanned or in the digital photograph from your digital camera is captured and presented in the Photoshop environment when you do your manipulations. The JPEG algorithm, however, is what is called a destructive compression algorithm meaning that it takes a large percentage of the color and the tonal information of the photograph and throws it away and then goes back and with a mathematical formula, fills in the gaps that it has thrown away, thus reducing the file size substantially. Now the JPEG image that we have here is about twenty-four KB in size and the TIFF image, by comparison, is three hundred and twenty-four KB in size, more than ten times the file size of the JPEG. Now you look at these two images side by side and at a casual glance you say to yourself well these do not look too different, I mean, so what's the big deal? Well, they are different and we are going to demonstrate that. The only thing you want to use a JPEG for, is to put it on the internet. This will look great on the internet where you have to achieve a compromise between file size and quality of the photograph. The TIFF file, however, is what you are going to print and this is the highest quality image that you are going to be able to generate when you send it to a printer. You are not going to print a JPEG, do not think that when you start doing manipulations, you are going to print JPEGs. I mean you can print them, don't get me wrong, but it is not going to look anywhere near as good as a TIFF image is going to look. Now let us take a look at why; I am going to demonstrate to you what goes on in a TIFF and a JPEG image when they are compressed. We are going to do these about seven hundred percent, so I will zoom in here, both these images are now at seven hundred percent magnification, and this is a red-letter day folks, you are watching me do something for the first time in six years that I have been using Photoshop and that is using the contrast and brightness controls. I very rarely, if ever, use these controls for reasons that I will explain later, but for this particular purpose it is going to be fine, I do not really care about the end result. I am trying to set up a demonstration for you and I do not use contrast and brightness to achieve the contrast and brightness. Notice the TIFF image right here, it looks pretty good, it has got a really smooth tonal image on the sky, the ocean looks very good, a lot more color information, there are a lot of pixels in here with a lot of different colors represented. And you come here, you look at this JPEG image, look at how awful that looks; there is very little color information, and this area here, the dark and the dark and the white and all of these areas down here, they have all been extrapolated mathematically, to be filled in what was thrown away to achieve the small file size. So you can see that this is a much lower quality image, just take a look at her forehead here, and just compare, it is rougher, choppier image. I mean what is up with this square thing here that came up, that does not look too good. Here on this image however, it is much smoother, you've got more color information, you have got a better tonal quality. So I'm hoping you can see this and you understand now more why you do not print or you are not looking for a JPEG image to be something that you are going to print and put on your wall. You can do it, do not get me wrong, but it is not going to look very good. It is not going to do you or your printer or anything else justice. Use JPEG's only for the internet and when you are going to print them, print them with a TIFF file, or better yet, a PSD file; we will go over that later.