That is best done is photo software, such as Photoshop or GIMP. You can set your particular image size. In your camera, you should use the max settings, since that image is basically your "negative."
You can do many tricks with digital images but the one thing you can't do is add resolution to a photograph after it has been taken. This is the main thing you have to make sure is right beforeyou take the next photograph with your digital camera.
Print size: 6" x 4" or 7" x 5"
Digital image: 1800 x 1200 to 2100 x 1500 (2.2 mega-pixels to 3.2 mega-pixels)
To convert high resolution photos to a lower resolution:Open the photo for display.Right mouse click on photo. (I have my photo editor set as the standard Microsoft Office Picture Manager, but many other photo display programs also work.)Select edit.Select Re-size, choose desired size, saveFile Save as...
Unfortunately, it is impossible to "add resolution" to a low resolution image to get a high quality high resolution image. You might get slightly better results by making sure the bigger size is some multiple (2 or 3 times as big, for example) of the original size, but there is not very much that can be done.
If an image or photo is looked at under a microscope you will see tiny dots of color. High Resolution means the photo/image has more dpi "dots per inch", and the photo or image can be decreased to any appropriate size, and the image/photo will still look exactly the same without the photo/image looking too pixelated, and fuzzy. Low Resolution mean the photo/image has a lower dpi "dots per inch". Because of space, and time most images on the web are at 72 dpi. Having a lower resolution means less download time for smaller photo/images. While high Resolution photos/images are LARGER, and takes a longer time to download. Tip: Most photos/images CAN NOT be increased in size beyond 121% without losing resolution, and risk becoming pixelated, and fuzzy.
Changing resolution you will change print size of photo or both print size and pixel dimensions. This depend what resolution you need. Example: if you have 400x200 px image with 300 resolution (1.3 inch wide printable dimension) changing resolution to 72 px per inch you can get 1600x800px image with 5.2 inch wide printable dimension.
First You open your photo in image ready software then you reduce your size as you want and then save this photo with save optimized as option and check the size of photo. In this way you reduce your size of photo with particular way. If the size is not convert as your want you reduce the image size again and again save this photo with save optimized option. In this way you will surely convert in specific size.Note : The save optimized option is available in File Menu.
First of all DPI stands for Dots Per Inch which is more often assocated with the resolution that a printer can print at. When refering to digital cameras DPI is also a measurement of resolution. However, when discussing resolution, often times the better the resolution is the better the picture will turn out. The only problem with having a high resolution camera is that if the printer that is used to print off can't print at the same resolution that the camera took the picture at, the quality of the picture won't be as good. If you are going to look at buying a digital camera the better measure of resolution and quality is usually megapixels. It depends on what you are using the term to describe. The term photo quality really does not have a specific definition. Exact usage is dependent on the user or equipment manufacturer. Many scanner manufacturers describe a scanner setting of 300dpi as photo quality because they say that higher settings do not enhance the quality of the resulting scanned image when stored as a .jpg image (the most common consumer picture format). Others describe 600dpi scanning as photo quality when scanning photo negatives. Printer manufacturers describe various print resolutions as photo quality depending on when the description was written. These have included resolutions of 600dpi in the past. Many color inkjet printers tout print capabilities of over 4000dpi. Laser jet rprint resolutions seem to have a baseline of 600dpi. The subjective quality of a printed photo will depend on the technology (laserjet, inkjet, dye sublimation,etc) and quality of the printer. Photo Quality depends both on the input source (scanned photo, scanned photo negative, etc) and the output source (computer screen, printed digital photo, etc). When using computer screens, IPODs, and digital picture frames you are using a limited number of pixels up to a bout 2 megapixels on the larger computer screeens and much less on IPODs (because of the screen size), so higher resolution will gain you nothing. For most consumer usage, scans and prints of photos made at 600dpi resolutions will be more than adequate.
That means 72 pixels are distributed vertically and horizontally in each inch (each inch of photo contains 72x72 pixels). This is explanation for photo which have Image > Image Size > Resolution > 72 pix/inch. This resolution is suitable for Web output, for print you will need at least 150-300px/inch.
To apply tonal, color, noise reduction, and other adjustments to digital photos To establish raw settings for your digital camera To apply final output sharpening to a photo To create adjustment presets To set the color space, size, depth, and resolution for your photo files To crop and straighten photos To apply masks to hide areas of a photo To synchronize the color settings between your camera and Photoshop
It all really depends what size of digital print you are wanting to make. The larger the print the higher the resolution needs to be so that the image is not fuzzy. I would visit www.photoshopessentials.com/essentials/image-quality/ and read the tutorial about how the resoultion of your digital images affects image quality when printing.
The amount of photos that a digital photo frame can hold depends upon the size of its memory card as well as the resolution of the photos. A professional grade photo is often somewhere around 3 megabytes, with lesser quality photos ranging down to only a fraction of that. The majority of digital photo frames currently range from 512MB up to 1GB (1,000MB) or 2GB (2,000MB). Dividing the number of megabytes the frame can hold by 3 will tell approximately how many professional-grade photos the frame will hold. If the photos are of lesser quality, the fram may be able to hold thousands of photos.
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