25-09-2017, 07:10 AM
34
Re: Jpeg Raw and Tiff
Images are made up from millions of tiny, tiny dots of colour, called pixels.The size of an image can be determined in two ways - physical size, ie: 16" X 9", or in the case of computers, measured in pixels, ie 6400 px X 4900 px and density, the size of of the pixels.
The more pixels in an image, the greater the density, the finer the definition.
It can be seen how the camera/computer reduces the pixel count in the image, (by making the pixels larger), resulting in a far 'blockier' end result.
Jpegs are fine for the Internet, but any other sort of reproduction, especially printing needs to be saved as a Tiff at best, or a very large Jpeg.
25-09-2017, 10:40 AM
35
Re: Jpeg Raw and Tiff
Yes. Whenever I save a jpeg I always go for the largest file option (least compression). That results in pictures that I want to view on screen or print out at A4 size being perfectly acceptable.I'm sure, though, that printing out pictures at much larger sizes would show visible pixels.
27-09-2017, 10:30 PM
36
Re: Jpeg Raw and Tiff
Originally Posted by Fogey
->
Images are made up from millions of tiny, tiny dots of colour, called pixels.The size of an image can be determined in two ways - physical size, ie: 16" X 9", or in the case of computers, measured in pixels, ie 6400 px X 4900 px and density, the size of of the pixels.
The more pixels in an image, the greater the density, the finer the definition.
It can be seen how the camera/computer reduces the pixel count in the image, (by making the pixels larger), resulting in a far 'blockier' end result.
Jpegs are fine for the Internet, but any other sort of reproduction, especially printing needs to be saved as a Tiff at best, or a very large Jpeg.
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