How do I resize an object in Photoshop cs3 without it getting blurry?

I select the object and use the transform tool to re-size it, but it gets all blurry when I make it bigger. I've tried holding shift down while I re-size, but it doesn't work. I'm just trying to re-size an object, not the entire image. How do I do it and keep it's original sharpness?How do I resize an object in Photoshop cs3 without it getting blurry?
You can only do this if the ORIGINAL image is a Vector image. If it is a JPEG or GIF or PNG then there is nothing you can do except try and find a higher resolution pic.





For instance 1280 x 1024 is sharper than 640 x 480. If you are finding these pics in google images remember to not download the thumbnails you see in the search results, click on the thumbnail, then click on open original image. This will give you its true size. If its big enough, THEN download.How do I resize an object in Photoshop cs3 without it getting blurry?
The problem is you can make big things small, and they will look fine, but you cant really make small things big.





When you have any image, it is a certain size and a certain number of pixels. When you go beyond the original size, all your doing is enlarging the pixels of the image , making it less defined and blurry.





Most people who take a picture or make a picture ususally save the image in the original and largest size they can, and then make it smaller for their needs.





If your picture is taken with a camera, the higher megapixel cameras make bigger pictures that stay sharp at much larger sizes than the smaller megapixel cameras.





If its a drawing or an already existing picture, you can try scanning it at a higher resolution, which may help you get it a little bigger without much blur, but it will also show defects of the physical item more clearly.