Formula

[gene thornton]

<p>Hi Guys,<br>

Could someone please give me the formula for figuring the MB size of the image. Thank you</p>

 

[KenPapai]

<p>Not really possible UNLESS the the image file is an uncompressed TIFF.</p>

<p>What image? What size? What format? </p>

<p>E.g., highest quality JPGs from 10 MP cameras have file size varies from 3 to 5 MB. It can be higher or lower still. Raw files? 12-bit? 14-bit capture?</p>

<p>Also, how long should a piece of rope be, in meters?</p>

[colin_mattson1]

<p>Image | Image Size in Photoshop. There's no reason to calculate it out by hand unless you're using some completely weird software that won't show you the pixel file size.</p>

<p>If you need to, though, for RGB images it's:<br /> W * H * 3 * BPC (8 or 16) / 8388608</p>

<p>So a 1000 x 1000 8-bit image is:<br>

1000 * 1000 * 3 * 8 / 8388608<br>

Yielding a raw pixel data size of 2.86MB</p>

[JeffOwen]

<p>The image size when opened and viewed say in Photoshop is roughly 3 times the megapixel size of the camera. Assuming the photo was taken at the max resolution.<br>

The file size is so dependant on which format you are using and the image content that there is no formula that can be safely used. A 'busy' image file (one with lots of colourful features) is larger than a plain image of just sky for instance.</p>

<p> </p>