You need to shrink the picture down and take a High Def pic of it. DxO has something, never tried it, but here is the URL: "http://www.dxo.com/intl/photo/dxo_optics_pro" it has a trial or you can pay like $14.00.
go to http://www.shrinkpictures.com/ its a online image resizer and you can set the size and image quality. hope this helps
No, only on the quality. If you have a picture that is in low quality, perhaps because you scanned it that way, printing in high resolution won't be able to improve the image quality.
Depends for what the image is going to be used. If it's for a high resolution printing such as print ad in a magazine or poster TIFF format with LZW is preferred for quality purpose. JPEG format gives more options for compressing an image, especially for web usages or not for high quality printing purpose. Also it depends on the original image quality and resolution, if the quality of the original image is good, then JPEG will be a good option to use.
convert it to avi format
Image > Image Size
In order to find a high resolution world map, you should search for high resolution world map on an online search engine under "images." Most image websites will allow you to specify the resolution of the image.
You could tell because low resolution makes for a pixelated picture, and high resolution settings, you cannot tell.
Open image in Photoshop then go to Image > Image Size.
I would like to ask why you would want to do this. But anyways. In an image viewer (e.g. "preview" on Mac Os X) make your image smaller. eg: -> -> Then save your file. Then whenever you open that file at the original size the quality will not be as good as it was.
no they record at the same rate but the low resolution is of lower quality and smaller file size than the higher resolution image.
Image resolution is very much important. An image in a wrong circumstance with wrong resolution can be looked terrible. For web images, the resolution for a same size image should be 72 on the screen. A perfect pixel and right size are needed for a correct line-up. If the image resolution is very much high, it will break the page lay out. For printing purpose, image resolution should be 300 PPI so that it remains unbroken with a 'screen'. If you look a magazine photo under a magnifying glass, the above mentioned conditions can be understood. Low resolution image looks fuzzy. Black type and black panels are considered as solid areas in print. For this, image resolution should be higher than usual for avoiding broken text. For supplying flattened artwork, I complete my artwork at 600PPI but I try to produce PDF/ X artwork to overcome this situation. For that, an overdo of resolution is not hampered and a pin-sharped result can always be obtained.
High resolution PDF settings produce documents with sharper and more detailed images suitable for printing, but may result in larger file sizes. Low resolution PDF settings create documents with lower image quality that are more suitable for online viewing or emailing, with smaller file sizes. Choose the setting based on your intended use for the PDF.