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.
Yes it is, depend of what You want to do with image. IF You want to print then resolution is very important, if You gonna post image on web site more important are pixel dimensions because on web images will be displayed with 72 ppi regardless of original image resolution.
The optimal resolution for a 16x20 image is 2400x3000 pixels.
To determine the resolution of an image, you need to look at the number of pixels it contains. Resolution is typically expressed as the width and height of the image in pixels, such as 1920x1080. The higher the number of pixels, the higher the resolution and the clearer the image will appear.
The resolution of an image can be determined by looking at the number of pixels per inch (PPI) or dots per inch (DPI) in the image. The higher the PPI or DPI, the higher the resolution of the image. This can usually be found in the image file's properties or by using image editing software to check the image dimensions and resolution settings.
with your image resolution? Nothing happens it remains the same till you change it in Image Size dialog. Image > Image Size.. Magnification is for your convenience to see enlarged image nothing really happens to actual resolution of original image.
To determine if an image is high resolution, check the image file's dimensions and resolution settings. High resolution images typically have larger dimensions (e.g. 3000 x 2000 pixels) and a higher resolution setting (e.g. 300 dpi). You can also use image editing software to view the image properties and check the resolution details.
To determine the image resolution, you can check the image file properties or use an image editing software to view the dimensions in pixels. The resolution is typically expressed as width x height in pixels, such as 1920x1080 for a Full HD image.
Go to Image > Image Size. If you want to keep current Width and Height of the image uncheck Resample image then type new reolution in Resolution field. When you want to resample image (to change Width and Height to match new resolution) check Resample Image and type desired resolution in Resolution field.
Resolution of image is used to determine the quality of image in digital camera.
The maximum resolution of a 2MP image is 1920 x 1080 pixels.
The resolution of a 2-megapixel image is 1920 pixels by 1080 pixels.
go to http://www.shrinkpictures.com/ its a online image resizer and you can set the size and image quality. hope this helps