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Digital Image Sizes and Storage
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Image Files - Formats and Uses, JPEG image files are the most commonly used digital image format. They are universally compatible with just about every usage and storage medium imaginable, allowing for high quality photographic images at manageable sizes.
Digital Image Storage Digital image files including JPEGs are often stored, transfered and used directly from today's most popular digital storage devices and mediums. These include memory cards (such as those found in cameras), memory sticks, cards, portable hard drives, internal hard drives, network storage devices, as well as DVDs and CDs.

So when converting traditional photographic prints, slides and negatives to digital - what are the factors and options impacting digital file sizes and storage requirements? Generally, image size is a result of original media size, scanning resolution (dpi or dots/pixels per inch), image content, image processing (including compression) and file type.

The tables below (one for each scan resolution) show estimates of how, on average, various prints scans will be sized and the resulting storage requirements.

Digital Images - Photo Prints (to JPEG)
Standard - 300dpi Scan Resolution*
Original Image Size JPEG File Files Files
Print Size Pixels MegaPixels Size (MB) Per DVD Per CD
3" X 5" 900 X 1500 1.4 1.1 3900 600
4" X 6" 1200 X 1800 2.2 1.6 3000 400
5" X 7" 1500 X 2100 3.2 2.5 1800 275
8" X 10" 2400 X 3000 7.2 4.3 1000 150

Digital Images - Photo Prints (to JPEG)
Gold - 400dpi Scan Resolution*
Original Image Size JPEG File Files Files
Print Size Pixels MegaPixels Size (MB) Per DVD Per CD
3" X 5" 1200 X 1200 2.4 1.9 2400 350
4" X 6" 1600 X 2400 3.8 2.8 1600 250
5" X 7" 2000 X 2800 5.6 4.2 1100 160
8" X 10" 3200 X 4000 12.8 7.7 600 95

Digital Images - Photo Prints (to JPEG)
Platinum - 600dpi Scan Resolution*
Original Image Size JPEG File Files Files
Print Size Pixels MegaPixels Size (MB) Per DVD Per CD
3" X 5" 1800 X 3000 5.4 4.9 950 140
4" X 6" 2400 X 3600 8.6 5.9 780 115
5" X 7" 3000 X 4200 12.6 9.5 480 70
8" X 10" 4800 X 6000 28.8 19.5 230 35


The table below shows estimates of how, on average, 35mm Slides and Negatives scans will be sized at three different scan resolutions and the resulting storage requirements.

Digital Images - 35mm Slides & Negative Film (to JPEG)
Standard, Gold & Platinum Scan Resolutions*
Scan Image Size JPEG File Files Files
dpi Pixels MegaPixels Size (MB) Per DVD Per CD
2000 1740 X 2660 4.6 3.0 1500 170
3000 2625 X 3900 9.2 6.6 670 75
4000 3500 X 5200 18.5 12.0 370 45


The table below shows estimates of how, on average, 35mm Slides and Negatives scans will be sized at three different scan resolutions for TIFF files and the resulting storage requirements.

Digital Images - 35mm Slides & Negative Film (to TIFF)
Standard, Gold & Platinum Scan Resolutions*
Scan Image Size JPEG File Files Files
dpi Pixels MegaPixels Size (MB) Per DVD1 Per CD1
2000 1740 X 2660 4.6 14.0 330 50
3000 2625 X 3900 9.2 32.0 140 20
4000 3500 X 5200 18.5 56.0 80 12


* Actual files sizes and capacities may vary significantly by file and on average based upon  factors including media, condition, content, and processing options.
(1) Files per DVD and Files per CD are estimated for illustrative purposes only, the FotoBridge TIFF option may require and include mobile drive as transfer media.



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