 BetterPhoto Member |
file size what canvas size and a file size is produced in RGB mode ? I am not interested in JPEG format images .
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John A. Lind |
Sanjiv, If I've done my math correctly, in "large-fine" mode (36 bit color and 2160 X 1440 pixels) the 36 bit TIFF file will be a few hundred bytes larger than 13,996,800 bytes, or just under 14 MBytes. Caveat: this is only if the camera stores the TIFF file in 36-bit color (12 bits per channel). Most twain drivers and imaging software handles only 24-bit color (8 bits per channel) and sampling is done during either file storage on the camera or during transfer to your computer that downsizes the number of bits per channel to 8 (24-bit color). If so, a 24-bit color TIFF of the same pixel size is 9,331,600 bytes. By comparison, a 48-bit color TIFF roughly twice that size: 18,662,636 bytes. At least some of the additional few hundred bytes in the file are file overhead for your operating system (file name, size, date, etc.) and image overhead for the imaging application opening the file (pixel dimensions, color or B/W, bits per channel, etc.). Note: Even though the CCD sensor in the D30 is 2226 x 1460 pixels, the effective pixel dimensions for the image produced by it is 2160 x 1440. -- John
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