Why can my digital camera take 3M photos? Generally, the size of a photo is only a few k, why?

Satisfied answers are 9: 30, 15, 20 10-0 1-09. Hehe, don't listen to them. It is normal to have 3M. Tell you in the simplest way, there is nothing to make a fuss about. Don't you want to upload space? Just give it a try. You right-click the photo file and there will be an editor. After clicking, open the drawing tool. Don't move anything after opening the drawing. You click on the file in the upper left corner-save as and save it on the desktop (easy to find). When you find this file again, you will find that it is only a few hundred k, and at most it is1m. If it is a SLR, it is about1.5mb. The method is simple. Try to save some W photos in my computer like this. Only professional photographers don't do this because of the loss of resolution, but we don't watch the follow-up: every time I take a picture, I have to go through such trouble ... Who dares to take a picture ... When I just bought it back ... I can go directly to the space after I take it ... Don't bother ... Now I don't know what's wrong ... He is like this ... Alas ... Answer: So I said that it takes 5-6MB to take a long JPG photo every time. You turned on the camera and took a picture. Basically, fines or standards are not adjusted. Generally, 200W pixels is enough, that is, 1600* 1200, which can be uploaded directly. Follow-up: your method doesn't work ... it doesn't work ... I think it's ok to take it directly to the place you bought for him to read/answer: I have written so many words on such a simple question, don't you understand? Either you draw pictures or you change the camera settings. How professional do you think the seller is? Do you think the major is selling cameras or photographers? I know your method, handsome, but it's too much trouble. Thank you for writing me a lot. Hehe ~ ~ ~ You refuse to be simple and can't get along well! ! In this case, who will buy tens of thousands of digital photos? It's worse than a cell phone. Right/? Answer: the film effect produced by the camera's photoreceptor is definitely a good way. Although troublesome, it is very practical. A camera is a camera, and a good mobile phone can't compare with it. See for yourself. You like that method and use that method. Please adopt a satisfactory answer as soon as possible to save everyone's precious time. Follow-up: carry out the problem to the end ~ ~ ~ handsome! Hehe ~ ~ ~ I found the best way through classics!